1253124820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{809}}^1\times {\mathrm{1889}}^1$

素因数の和:2748

約数の個数: 48

約数和(自身を含む): 2700507600

約数和(自身を除く): 1447382780

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 809, 820, 1618, 1889, 3236, 3778, 4045, 7556, 8090, 9445, 16180, 18890, 33169, 37780, 66338, 77449, 132676, 154898, 165845, 309796, 331690, 387245, 663380, 774490, 1528201, 1548980, 3056402, 6112804, 7641005, 15282010, 30564020, 62656241, 125312482, 250624964, 313281205, 626562410, 1253124820]

約数ペア:

[(1, 1253124820), (2, 626562410), (4, 313281205), (5, 250624964), (10, 125312482), (20, 62656241), (41, 30564020), (82, 15282010), (164, 7641005), (205, 6112804), (410, 3056402), (809, 1548980), (820, 1528201), (1618, 774490), (1889, 663380), (3236, 387245), (3778, 331690), (4045, 309796), (7556, 165845), (8090, 154898), (9445, 132676), (16180, 77449), (18890, 66338), (33169, 37780)]