30971980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{857}}^1$

素因数の和:1018

約数の個数: 48

約数和(自身を含む): 70630560

約数和(自身を除く): 39658580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 556, 695, 857, 1390, 1714, 1807, 2780, 3428, 3614, 4285, 7228, 8570, 9035, 11141, 17140, 18070, 22282, 36140, 44564, 55705, 111410, 119123, 222820, 238246, 476492, 595615, 1191230, 1548599, 2382460, 3097198, 6194396, 7742995, 15485990, 30971980]

約数ペア:

[(1, 30971980), (2, 15485990), (4, 7742995), (5, 6194396), (10, 3097198), (13, 2382460), (20, 1548599), (26, 1191230), (52, 595615), (65, 476492), (130, 238246), (139, 222820), (260, 119123), (278, 111410), (556, 55705), (695, 44564), (857, 36140), (1390, 22282), (1714, 18070), (1807, 17140), (2780, 11141), (3428, 9035), (3614, 8570), (4285, 7228)]