128648980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{1039}}^1$

素因数の和:1240

約数の個数: 48

約数和(自身を含む): 278853120

約数和(自身を除く): 150204140

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 151, 164, 205, 302, 410, 604, 755, 820, 1039, 1510, 2078, 3020, 4156, 5195, 6191, 10390, 12382, 20780, 24764, 30955, 42599, 61910, 85198, 123820, 156889, 170396, 212995, 313778, 425990, 627556, 784445, 851980, 1568890, 3137780, 6432449, 12864898, 25729796, 32162245, 64324490, 128648980]

約数ペア:

[(1, 128648980), (2, 64324490), (4, 32162245), (5, 25729796), (10, 12864898), (20, 6432449), (41, 3137780), (82, 1568890), (151, 851980), (164, 784445), (205, 627556), (302, 425990), (410, 313778), (604, 212995), (755, 170396), (820, 156889), (1039, 123820), (1510, 85198), (2078, 61910), (3020, 42599), (4156, 30955), (5195, 24764), (6191, 20780), (10390, 12382)]