638640000

素因数分解:

$2^7\times 3^2\times 5^4\times {\mathrm{887}}^1$

素因数の和:927

約数の個数: 240

約数和(自身を含む): 2299045320

約数和(自身を除く): 1660405320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 32, 36, 40, 45, 48, 50, 60, 64, 72, 75, 80, 90, 96, 100, 120, 125, 128, 144, 150, 160, 180, 192, 200, 225, 240, 250, 288, 300, 320, 360, 375, 384, 400, 450, 480, 500, 576, 600, 625, 640, 720, 750, 800, 887, 900, 960, 1000, 1125, 1152, 1200, 1250, 1440, 1500, 1600, 1774, 1800, 1875, 1920, 2000, 2250, 2400, 2500, 2661, 2880, 3000, 3200, 3548, 3600, 3750, 4000, 4435, 4500, 4800, 5000, 5322, 5625, 5760, 6000, 7096, 7200, 7500, 7983, 8000, 8870, 9000, 9600, 10000, 10644, 11250, 12000, 13305, 14192, 14400, 15000, 15966, 16000, 17740, 18000, 20000, 21288, 22175, 22500, 24000, 26610, 28384, 28800, 30000, 31932, 35480, 36000, 39915, 40000, 42576, 44350, 45000, 48000, 53220, 56768, 60000, 63864, 66525, 70960, 72000, 79830, 80000, 85152, 88700, 90000, 106440, 110875, 113536, 120000, 127728, 133050, 141920, 144000, 159660, 170304, 177400, 180000, 199575, 212880, 221750, 240000, 255456, 266100, 283840, 319320, 332625, 340608, 354800, 360000, 399150, 425760, 443500, 510912, 532200, 554375, 567680, 638640, 665250, 709600, 720000, 798300, 851520, 887000, 997875, 1021824, 1064400, 1108750, 1277280, 1330500, 1419200, 1596600, 1663125, 1703040, 1774000, 1995750, 2128800, 2217500, 2554560, 2661000, 2838400, 3193200, 3326250, 3548000, 3991500, 4257600, 4435000, 4989375, 5109120, 5322000, 6386400, 6652500, 7096000, 7983000, 8515200, 8870000, 9978750, 10644000, 12772800, 13305000, 14192000, 15966000, 17740000, 19957500, 21288000, 25545600, 26610000, 31932000, 35480000, 39915000, 42576000, 53220000, 63864000, 70960000, 79830000, 106440000, 127728000, 159660000, 212880000, 319320000, 638640000]

約数ペア:

[(1, 638640000), (2, 319320000), (3, 212880000), (4, 159660000), (5, 127728000), (6, 106440000), (8, 79830000), (9, 70960000), (10, 63864000), (12, 53220000), (15, 42576000), (16, 39915000), (18, 35480000), (20, 31932000), (24, 26610000), (25, 25545600), (30, 21288000), (32, 19957500), (36, 17740000), (40, 15966000), (45, 14192000), (48, 13305000), (50, 12772800), (60, 10644000), (64, 9978750), (72, 8870000), (75, 8515200), (80, 7983000), (90, 7096000), (96, 6652500), (100, 6386400), (120, 5322000), (125, 5109120), (128, 4989375), (144, 4435000), (150, 4257600), (160, 3991500), (180, 3548000), (192, 3326250), (200, 3193200), (225, 2838400), (240, 2661000), (250, 2554560), (288, 2217500), (300, 2128800), (320, 1995750), (360, 1774000), (375, 1703040), (384, 1663125), (400, 1596600), (450, 1419200), (480, 1330500), (500, 1277280), (576, 1108750), (600, 1064400), (625, 1021824), (640, 997875), (720, 887000), (750, 851520), (800, 798300), (887, 720000), (900, 709600), (960, 665250), (1000, 638640), (1125, 567680), (1152, 554375), (1200, 532200), (1250, 510912), (1440, 443500), (1500, 425760), (1600, 399150), (1774, 360000), (1800, 354800), (1875, 340608), (1920, 332625), (2000, 319320), (2250, 283840), (2400, 266100), (2500, 255456), (2661, 240000), (2880, 221750), (3000, 212880), (3200, 199575), (3548, 180000), (3600, 177400), (3750, 170304), (4000, 159660), (4435, 144000), (4500, 141920), (4800, 133050), (5000, 127728), (5322, 120000), (5625, 113536), (5760, 110875), (6000, 106440), (7096, 90000), (7200, 88700), (7500, 85152), (7983, 80000), (8000, 79830), (8870, 72000), (9000, 70960), (9600, 66525), (10000, 63864), (10644, 60000), (11250, 56768), (12000, 53220), (13305, 48000), (14192, 45000), (14400, 44350), (15000, 42576), (15966, 40000), (16000, 39915), (17740, 36000), (18000, 35480), (20000, 31932), (21288, 30000), (22175, 28800), (22500, 28384), (24000, 26610)]