31811715

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:173

約数の個数: 72

約数和(自身を含む): 61663680

約数和(自身を除く): 29851965

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 47, 65, 89, 117, 141, 169, 195, 235, 267, 423, 445, 507, 585, 611, 705, 801, 845, 1157, 1335, 1521, 1833, 2115, 2535, 3055, 3471, 4005, 4183, 5499, 5785, 7605, 7943, 9165, 10413, 12549, 15041, 17355, 20915, 23829, 27495, 37647, 39715, 45123, 52065, 54379, 62745, 71487, 75205, 119145, 135369, 163137, 188235, 225615, 271895, 357435, 489411, 676845, 706927, 815685, 2120781, 2447055, 3534635, 6362343, 10603905, 31811715]

約数ペア:

[(1, 31811715), (3, 10603905), (5, 6362343), (9, 3534635), (13, 2447055), (15, 2120781), (39, 815685), (45, 706927), (47, 676845), (65, 489411), (89, 357435), (117, 271895), (141, 225615), (169, 188235), (195, 163137), (235, 135369), (267, 119145), (423, 75205), (445, 71487), (507, 62745), (585, 54379), (611, 52065), (705, 45123), (801, 39715), (845, 37647), (1157, 27495), (1335, 23829), (1521, 20915), (1833, 17355), (2115, 15041), (2535, 12549), (3055, 10413), (3471, 9165), (4005, 7943), (4183, 7605), (5499, 5785)]