20788450

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{661}}^1$

素因数の和:727

約数の個数: 48

約数和(自身を含む): 42111144

約数和(自身を除く): 21322694

約数列:

[1, 2, 5, 10, 17, 25, 34, 37, 50, 74, 85, 170, 185, 370, 425, 629, 661, 850, 925, 1258, 1322, 1850, 3145, 3305, 6290, 6610, 11237, 15725, 16525, 22474, 24457, 31450, 33050, 48914, 56185, 112370, 122285, 244570, 280925, 415769, 561850, 611425, 831538, 1222850, 2078845, 4157690, 10394225, 20788450]

約数ペア:

[(1, 20788450), (2, 10394225), (5, 4157690), (10, 2078845), (17, 1222850), (25, 831538), (34, 611425), (37, 561850), (50, 415769), (74, 280925), (85, 244570), (170, 122285), (185, 112370), (370, 56185), (425, 48914), (629, 33050), (661, 31450), (850, 24457), (925, 22474), (1258, 16525), (1322, 15725), (1850, 11237), (3145, 6610), (3305, 6290)]