64921960

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{6791}}^1$

素因数の和:7041

約数の個数: 32

約数和(自身を含む): 146707200

約数和(自身を除く): 81785240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 956, 1195, 1912, 2390, 4780, 6791, 9560, 13582, 27164, 33955, 54328, 67910, 135820, 271640, 1623049, 3246098, 6492196, 8115245, 12984392, 16230490, 32460980, 64921960]

約数ペア:

[(1, 64921960), (2, 32460980), (4, 16230490), (5, 12984392), (8, 8115245), (10, 6492196), (20, 3246098), (40, 1623049), (239, 271640), (478, 135820), (956, 67910), (1195, 54328), (1912, 33955), (2390, 27164), (4780, 13582), (6791, 9560)]