681760000

素因数分解:

$2^8\times 5^4\times {\mathrm{4261}}^1$

素因数の和:4297

約数の個数: 90

約数和(自身を含む): 1700925842

約数和(自身を除く): 1019165842

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 625, 640, 800, 1000, 1250, 1280, 1600, 2000, 2500, 3200, 4000, 4261, 5000, 6400, 8000, 8522, 10000, 16000, 17044, 20000, 21305, 32000, 34088, 40000, 42610, 68176, 80000, 85220, 106525, 136352, 160000, 170440, 213050, 272704, 340880, 426100, 532625, 545408, 681760, 852200, 1065250, 1090816, 1363520, 1704400, 2130500, 2663125, 2727040, 3408800, 4261000, 5326250, 5454080, 6817600, 8522000, 10652500, 13635200, 17044000, 21305000, 27270400, 34088000, 42610000, 68176000, 85220000, 136352000, 170440000, 340880000, 681760000]

約数ペア:

[(1, 681760000), (2, 340880000), (4, 170440000), (5, 136352000), (8, 85220000), (10, 68176000), (16, 42610000), (20, 34088000), (25, 27270400), (32, 21305000), (40, 17044000), (50, 13635200), (64, 10652500), (80, 8522000), (100, 6817600), (125, 5454080), (128, 5326250), (160, 4261000), (200, 3408800), (250, 2727040), (256, 2663125), (320, 2130500), (400, 1704400), (500, 1363520), (625, 1090816), (640, 1065250), (800, 852200), (1000, 681760), (1250, 545408), (1280, 532625), (1600, 426100), (2000, 340880), (2500, 272704), (3200, 213050), (4000, 170440), (4261, 160000), (5000, 136352), (6400, 106525), (8000, 85220), (8522, 80000), (10000, 68176), (16000, 42610), (17044, 40000), (20000, 34088), (21305, 32000)]