489220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 1046808

約数和(自身を除く): 557588

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 401, 610, 802, 1220, 1604, 2005, 4010, 8020, 24461, 48922, 97844, 122305, 244610, 489220]

約数ペア:

[(1, 489220), (2, 244610), (4, 122305), (5, 97844), (10, 48922), (20, 24461), (61, 8020), (122, 4010), (244, 2005), (305, 1604), (401, 1220), (610, 802)]