19781710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{8951}}^1$

素因数の和:8988

約数の個数: 32

約数和(自身を含む): 40606272

約数和(自身を除く): 20824562

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 8951, 17902, 44755, 89510, 116363, 152167, 232726, 304334, 581815, 760835, 1163630, 1521670, 1978171, 3956342, 9890855, 19781710]

約数ペア:

[(1, 19781710), (2, 9890855), (5, 3956342), (10, 1978171), (13, 1521670), (17, 1163630), (26, 760835), (34, 581815), (65, 304334), (85, 232726), (130, 152167), (170, 116363), (221, 89510), (442, 44755), (1105, 17902), (2210, 8951)]