989830640

素因数分解:

$2^4\times 5^1\times {\mathrm{2213}}^1\times {\mathrm{5591}}^1$

素因数の和:7817

約数の個数: 40

約数和(自身を含む): 2302807968

約数和(自身を除く): 1312977328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2213, 4426, 5591, 8852, 11065, 11182, 17704, 22130, 22364, 27955, 35408, 44260, 44728, 55910, 88520, 89456, 111820, 177040, 223640, 447280, 12372883, 24745766, 49491532, 61864415, 98983064, 123728830, 197966128, 247457660, 494915320, 989830640]

約数ペア:

[(1, 989830640), (2, 494915320), (4, 247457660), (5, 197966128), (8, 123728830), (10, 98983064), (16, 61864415), (20, 49491532), (40, 24745766), (80, 12372883), (2213, 447280), (4426, 223640), (5591, 177040), (8852, 111820), (11065, 89456), (11182, 88520), (17704, 55910), (22130, 44728), (22364, 44260), (27955, 35408)]