81445000

素因数分解:

$2^3\times 5^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1$

素因数の和:225

約数の個数: 160

約数和(自身を含む): 236174400

約数和(自身を除く): 154729400

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 25, 26, 28, 35, 40, 50, 52, 56, 65, 70, 91, 100, 104, 125, 130, 140, 175, 179, 182, 200, 250, 260, 280, 325, 350, 358, 364, 455, 500, 520, 625, 650, 700, 716, 728, 875, 895, 910, 1000, 1250, 1253, 1300, 1400, 1432, 1625, 1750, 1790, 1820, 2275, 2327, 2500, 2506, 2600, 3250, 3500, 3580, 3640, 4375, 4475, 4550, 4654, 5000, 5012, 6265, 6500, 7000, 7160, 8125, 8750, 8950, 9100, 9308, 10024, 11375, 11635, 12530, 13000, 16250, 16289, 17500, 17900, 18200, 18616, 22375, 22750, 23270, 25060, 31325, 32500, 32578, 35000, 35800, 44750, 45500, 46540, 50120, 56875, 58175, 62650, 65000, 65156, 81445, 89500, 91000, 93080, 111875, 113750, 116350, 125300, 130312, 156625, 162890, 179000, 223750, 227500, 232700, 250600, 290875, 313250, 325780, 407225, 447500, 455000, 465400, 581750, 626500, 651560, 783125, 814450, 895000, 1163500, 1253000, 1454375, 1566250, 1628900, 2036125, 2327000, 2908750, 3132500, 3257800, 4072250, 5817500, 6265000, 8144500, 10180625, 11635000, 16289000, 20361250, 40722500, 81445000]

約数ペア:

[(1, 81445000), (2, 40722500), (4, 20361250), (5, 16289000), (7, 11635000), (8, 10180625), (10, 8144500), (13, 6265000), (14, 5817500), (20, 4072250), (25, 3257800), (26, 3132500), (28, 2908750), (35, 2327000), (40, 2036125), (50, 1628900), (52, 1566250), (56, 1454375), (65, 1253000), (70, 1163500), (91, 895000), (100, 814450), (104, 783125), (125, 651560), (130, 626500), (140, 581750), (175, 465400), (179, 455000), (182, 447500), (200, 407225), (250, 325780), (260, 313250), (280, 290875), (325, 250600), (350, 232700), (358, 227500), (364, 223750), (455, 179000), (500, 162890), (520, 156625), (625, 130312), (650, 125300), (700, 116350), (716, 113750), (728, 111875), (875, 93080), (895, 91000), (910, 89500), (1000, 81445), (1250, 65156), (1253, 65000), (1300, 62650), (1400, 58175), (1432, 56875), (1625, 50120), (1750, 46540), (1790, 45500), (1820, 44750), (2275, 35800), (2327, 35000), (2500, 32578), (2506, 32500), (2600, 31325), (3250, 25060), (3500, 23270), (3580, 22750), (3640, 22375), (4375, 18616), (4475, 18200), (4550, 17900), (4654, 17500), (5000, 16289), (5012, 16250), (6265, 13000), (6500, 12530), (7000, 11635), (7160, 11375), (8125, 10024), (8750, 9308), (8950, 9100)]