78942740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{811}}^1$

素因数の和:1008

約数の個数: 48

約数和(自身を含む): 172429824

約数和(自身を除く): 93487084

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 310, 314, 620, 628, 785, 811, 1570, 1622, 3140, 3244, 4055, 4867, 8110, 9734, 16220, 19468, 24335, 25141, 48670, 50282, 97340, 100564, 125705, 127327, 251410, 254654, 502820, 509308, 636635, 1273270, 2546540, 3947137, 7894274, 15788548, 19735685, 39471370, 78942740]

約数ペア:

[(1, 78942740), (2, 39471370), (4, 19735685), (5, 15788548), (10, 7894274), (20, 3947137), (31, 2546540), (62, 1273270), (124, 636635), (155, 509308), (157, 502820), (310, 254654), (314, 251410), (620, 127327), (628, 125705), (785, 100564), (811, 97340), (1570, 50282), (1622, 48670), (3140, 25141), (3244, 24335), (4055, 19468), (4867, 16220), (8110, 9734)]