81736720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78593}}^1$

素因数の和:78619

約数の個数: 40

約数和(自身を含む): 204658776

約数和(自身を除く): 122922056

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 78593, 157186, 314372, 392965, 628744, 785930, 1021709, 1257488, 1571860, 2043418, 3143720, 4086836, 5108545, 6287440, 8173672, 10217090, 16347344, 20434180, 40868360, 81736720]

約数ペア:

[(1, 81736720), (2, 40868360), (4, 20434180), (5, 16347344), (8, 10217090), (10, 8173672), (13, 6287440), (16, 5108545), (20, 4086836), (26, 3143720), (40, 2043418), (52, 1571860), (65, 1257488), (80, 1021709), (104, 785930), (130, 628744), (208, 392965), (260, 314372), (520, 157186), (1040, 78593)]