128536720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{123593}}^1$

素因数の和:123619

約数の個数: 40

約数和(自身を含む): 321838776

約数和(自身を除く): 193302056

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 123593, 247186, 494372, 617965, 988744, 1235930, 1606709, 1977488, 2471860, 3213418, 4943720, 6426836, 8033545, 9887440, 12853672, 16067090, 25707344, 32134180, 64268360, 128536720]

約数ペア:

[(1, 128536720), (2, 64268360), (4, 32134180), (5, 25707344), (8, 16067090), (10, 12853672), (13, 9887440), (16, 8033545), (20, 6426836), (26, 4943720), (40, 3213418), (52, 2471860), (65, 1977488), (80, 1606709), (104, 1235930), (130, 988744), (208, 617965), (260, 494372), (520, 247186), (1040, 123593)]