28442180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{787}}^1$

素因数の和:948

約数の個数: 48

約数和(自身を含む): 64868160

約数和(自身を除く): 36425980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 556, 695, 787, 1390, 1574, 1807, 2780, 3148, 3614, 3935, 7228, 7870, 9035, 10231, 15740, 18070, 20462, 36140, 40924, 51155, 102310, 109393, 204620, 218786, 437572, 546965, 1093930, 1422109, 2187860, 2844218, 5688436, 7110545, 14221090, 28442180]

約数ペア:

[(1, 28442180), (2, 14221090), (4, 7110545), (5, 5688436), (10, 2844218), (13, 2187860), (20, 1422109), (26, 1093930), (52, 546965), (65, 437572), (130, 218786), (139, 204620), (260, 109393), (278, 102310), (556, 51155), (695, 40924), (787, 36140), (1390, 20462), (1574, 18070), (1807, 15740), (2780, 10231), (3148, 9035), (3614, 7870), (3935, 7228)]