31358925

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 61746048

約数和(自身を除く): 30387123

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 71, 75, 117, 151, 195, 213, 225, 325, 355, 453, 585, 639, 755, 923, 975, 1065, 1359, 1775, 1963, 2265, 2769, 2925, 3195, 3775, 4615, 5325, 5889, 6795, 8307, 9815, 10721, 11325, 13845, 15975, 17667, 23075, 29445, 32163, 33975, 41535, 49075, 53605, 69225, 88335, 96489, 139373, 147225, 160815, 207675, 268025, 418119, 441675, 482445, 696865, 804075, 1254357, 2090595, 2412225, 3484325, 6271785, 10452975, 31358925]

約数ペア:

[(1, 31358925), (3, 10452975), (5, 6271785), (9, 3484325), (13, 2412225), (15, 2090595), (25, 1254357), (39, 804075), (45, 696865), (65, 482445), (71, 441675), (75, 418119), (117, 268025), (151, 207675), (195, 160815), (213, 147225), (225, 139373), (325, 96489), (355, 88335), (453, 69225), (585, 53605), (639, 49075), (755, 41535), (923, 33975), (975, 32163), (1065, 29445), (1359, 23075), (1775, 17667), (1963, 15975), (2265, 13845), (2769, 11325), (2925, 10721), (3195, 9815), (3775, 8307), (4615, 6795), (5325, 5889)]