78157780

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1\times {\mathrm{239}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 167650560

約数和(自身を除く): 89492780

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 197, 239, 332, 394, 415, 478, 788, 830, 956, 985, 1195, 1660, 1970, 2390, 3940, 4780, 16351, 19837, 32702, 39674, 47083, 65404, 79348, 81755, 94166, 99185, 163510, 188332, 198370, 235415, 327020, 396740, 470830, 941660, 3907889, 7815778, 15631556, 19539445, 39078890, 78157780]

約数ペア:

[(1, 78157780), (2, 39078890), (4, 19539445), (5, 15631556), (10, 7815778), (20, 3907889), (83, 941660), (166, 470830), (197, 396740), (239, 327020), (332, 235415), (394, 198370), (415, 188332), (478, 163510), (788, 99185), (830, 94166), (956, 81755), (985, 79348), (1195, 65404), (1660, 47083), (1970, 39674), (2390, 32702), (3940, 19837), (4780, 16351)]