19551740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{541}}^1$

素因数の和:702

約数の個数: 48

約数和(自身を含む): 44617440

約数和(自身を除く): 25065700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 541, 556, 695, 1082, 1390, 1807, 2164, 2705, 2780, 3614, 5410, 7033, 7228, 9035, 10820, 14066, 18070, 28132, 35165, 36140, 70330, 75199, 140660, 150398, 300796, 375995, 751990, 977587, 1503980, 1955174, 3910348, 4887935, 9775870, 19551740]

約数ペア:

[(1, 19551740), (2, 9775870), (4, 4887935), (5, 3910348), (10, 1955174), (13, 1503980), (20, 977587), (26, 751990), (52, 375995), (65, 300796), (130, 150398), (139, 140660), (260, 75199), (278, 70330), (541, 36140), (556, 35165), (695, 28132), (1082, 18070), (1390, 14066), (1807, 10820), (2164, 9035), (2705, 7228), (2780, 7033), (3614, 5410)]