787280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{757}}^1$

素因数の和:783

約数の個数: 40

約数和(自身を含む): 1973832

約数和(自身を除く): 1186552

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 757, 1040, 1514, 3028, 3785, 6056, 7570, 9841, 12112, 15140, 19682, 30280, 39364, 49205, 60560, 78728, 98410, 157456, 196820, 393640, 787280]

約数ペア:

[(1, 787280), (2, 393640), (4, 196820), (5, 157456), (8, 98410), (10, 78728), (13, 60560), (16, 49205), (20, 39364), (26, 30280), (40, 19682), (52, 15140), (65, 12112), (80, 9841), (104, 7570), (130, 6056), (208, 3785), (260, 3028), (520, 1514), (757, 1040)]