28736240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27631}}^1$

素因数の和:27657

約数の個数: 40

約数和(自身を含む): 71953728

約数和(自身を除く): 43217488

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27631, 55262, 110524, 138155, 221048, 276310, 359203, 442096, 552620, 718406, 1105240, 1436812, 1796015, 2210480, 2873624, 3592030, 5747248, 7184060, 14368120, 28736240]

約数ペア:

[(1, 28736240), (2, 14368120), (4, 7184060), (5, 5747248), (8, 3592030), (10, 2873624), (13, 2210480), (16, 1796015), (20, 1436812), (26, 1105240), (40, 718406), (52, 552620), (65, 442096), (80, 359203), (104, 276310), (130, 221048), (208, 138155), (260, 110524), (520, 55262), (1040, 27631)]