20988370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9497}}^1$

素因数の和:9534

約数の個数: 32

約数和(自身を含む): 43082928

約数和(自身を除く): 22094558

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9497, 18994, 47485, 94970, 123461, 161449, 246922, 322898, 617305, 807245, 1234610, 1614490, 2098837, 4197674, 10494185, 20988370]

約数ペア:

[(1, 20988370), (2, 10494185), (5, 4197674), (10, 2098837), (13, 1614490), (17, 1234610), (26, 807245), (34, 617305), (65, 322898), (85, 246922), (130, 161449), (170, 123461), (221, 94970), (442, 47485), (1105, 18994), (2210, 9497)]