19918730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9013}}^1$

素因数の和:9050

約数の個数: 32

約数和(自身を含む): 40887504

約数和(自身を除く): 20968774

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9013, 18026, 45065, 90130, 117169, 153221, 234338, 306442, 585845, 766105, 1171690, 1532210, 1991873, 3983746, 9959365, 19918730]

約数ペア:

[(1, 19918730), (2, 9959365), (5, 3983746), (10, 1991873), (13, 1532210), (17, 1171690), (26, 766105), (34, 585845), (65, 306442), (85, 234338), (130, 153221), (170, 117169), (221, 90130), (442, 45065), (1105, 18026), (2210, 9013)]