31667540

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 68526864

約数和(自身を除く): 36859324

約数列:

[1, 2, 4, 5, 10, 20, 61, 101, 122, 202, 244, 257, 305, 404, 505, 514, 610, 1010, 1028, 1220, 1285, 2020, 2570, 5140, 6161, 12322, 15677, 24644, 25957, 30805, 31354, 51914, 61610, 62708, 78385, 103828, 123220, 129785, 156770, 259570, 313540, 519140, 1583377, 3166754, 6333508, 7916885, 15833770, 31667540]

約数ペア:

[(1, 31667540), (2, 15833770), (4, 7916885), (5, 6333508), (10, 3166754), (20, 1583377), (61, 519140), (101, 313540), (122, 259570), (202, 156770), (244, 129785), (257, 123220), (305, 103828), (404, 78385), (505, 62708), (514, 61610), (610, 51914), (1010, 31354), (1028, 30805), (1220, 25957), (1285, 24644), (2020, 15677), (2570, 12322), (5140, 6161)]