28640560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27539}}^1$

素因数の和:27565

約数の個数: 40

約数和(自身を含む): 71714160

約数和(自身を除く): 43073600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27539, 55078, 110156, 137695, 220312, 275390, 358007, 440624, 550780, 716014, 1101560, 1432028, 1790035, 2203120, 2864056, 3580070, 5728112, 7160140, 14320280, 28640560]

約数ペア:

[(1, 28640560), (2, 14320280), (4, 7160140), (5, 5728112), (8, 3580070), (10, 2864056), (13, 2203120), (16, 1790035), (20, 1432028), (26, 1101560), (40, 716014), (52, 550780), (65, 440624), (80, 358007), (104, 275390), (130, 220312), (208, 137695), (260, 110156), (520, 55078), (1040, 27539)]