28431975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{241}}^1$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 55874896

約数和(自身を除く): 27442921

約数列:

[1, 3, 5, 11, 13, 15, 25, 33, 39, 55, 65, 75, 121, 143, 165, 195, 241, 275, 325, 363, 429, 605, 715, 723, 825, 975, 1205, 1573, 1815, 2145, 2651, 3025, 3133, 3575, 3615, 4719, 6025, 7865, 7953, 9075, 9399, 10725, 13255, 15665, 18075, 23595, 29161, 34463, 39325, 39765, 46995, 66275, 78325, 87483, 103389, 117975, 145805, 172315, 198825, 234975, 379093, 437415, 516945, 729025, 861575, 1137279, 1895465, 2187075, 2584725, 5686395, 9477325, 28431975]

約数ペア:

[(1, 28431975), (3, 9477325), (5, 5686395), (11, 2584725), (13, 2187075), (15, 1895465), (25, 1137279), (33, 861575), (39, 729025), (55, 516945), (65, 437415), (75, 379093), (121, 234975), (143, 198825), (165, 172315), (195, 145805), (241, 117975), (275, 103389), (325, 87483), (363, 78325), (429, 66275), (605, 46995), (715, 39765), (723, 39325), (825, 34463), (975, 29161), (1205, 23595), (1573, 18075), (1815, 15665), (2145, 13255), (2651, 10725), (3025, 9399), (3133, 9075), (3575, 7953), (3615, 7865), (4719, 6025)]