12712400

素因数分解:

$2^4\times 5^2\times {\mathrm{61}}^1\times {\mathrm{521}}^1$

素因数の和:600

約数の個数: 60

約数和(自身を含む): 31101804

約数和(自身を除く): 18389404

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 61, 80, 100, 122, 200, 244, 305, 400, 488, 521, 610, 976, 1042, 1220, 1525, 2084, 2440, 2605, 3050, 4168, 4880, 5210, 6100, 8336, 10420, 12200, 13025, 20840, 24400, 26050, 31781, 41680, 52100, 63562, 104200, 127124, 158905, 208400, 254248, 317810, 508496, 635620, 794525, 1271240, 1589050, 2542480, 3178100, 6356200, 12712400]

約数ペア:

[(1, 12712400), (2, 6356200), (4, 3178100), (5, 2542480), (8, 1589050), (10, 1271240), (16, 794525), (20, 635620), (25, 508496), (40, 317810), (50, 254248), (61, 208400), (80, 158905), (100, 127124), (122, 104200), (200, 63562), (244, 52100), (305, 41680), (400, 31781), (488, 26050), (521, 24400), (610, 20840), (976, 13025), (1042, 12200), (1220, 10420), (1525, 8336), (2084, 6100), (2440, 5210), (2605, 4880), (3050, 4168)]