285087140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1096489}}^1$

素因数の和:1096511

約数の個数: 24

約数和(自身を含む): 644736120

約数和(自身を除く): 359648980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1096489, 2192978, 4385956, 5482445, 10964890, 14254357, 21929780, 28508714, 57017428, 71271785, 142543570, 285087140]

約数ペア:

[(1, 285087140), (2, 142543570), (4, 71271785), (5, 57017428), (10, 28508714), (13, 21929780), (20, 14254357), (26, 10964890), (52, 5482445), (65, 4385956), (130, 2192978), (260, 1096489)]