28642640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27541}}^1$

素因数の和:27567

約数の個数: 40

約数和(自身を含む): 71719368

約数和(自身を除く): 43076728

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27541, 55082, 110164, 137705, 220328, 275410, 358033, 440656, 550820, 716066, 1101640, 1432132, 1790165, 2203280, 2864264, 3580330, 5728528, 7160660, 14321320, 28642640]

約数ペア:

[(1, 28642640), (2, 14321320), (4, 7160660), (5, 5728528), (8, 3580330), (10, 2864264), (13, 2203280), (16, 1790165), (20, 1432132), (26, 1101640), (40, 716066), (52, 550820), (65, 440656), (80, 358033), (104, 275410), (130, 220328), (208, 137705), (260, 110164), (520, 55082), (1040, 27541)]