28485680

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{3457}}^1$

素因数の和:3573

約数の個数: 40

約数和(自身を含む): 66891552

約数和(自身を除く): 38405872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 3457, 4120, 6914, 8240, 13828, 17285, 27656, 34570, 55312, 69140, 138280, 276560, 356071, 712142, 1424284, 1780355, 2848568, 3560710, 5697136, 7121420, 14242840, 28485680]

約数ペア:

[(1, 28485680), (2, 14242840), (4, 7121420), (5, 5697136), (8, 3560710), (10, 2848568), (16, 1780355), (20, 1424284), (40, 712142), (80, 356071), (103, 276560), (206, 138280), (412, 69140), (515, 55312), (824, 34570), (1030, 27656), (1648, 17285), (2060, 13828), (3457, 8240), (4120, 6914)]