17215725

素因数分解:

$3^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 29890944

約数和(自身を除く): 12675219

約数列:

[1, 3, 5, 15, 25, 53, 61, 71, 75, 159, 183, 213, 265, 305, 355, 795, 915, 1065, 1325, 1525, 1775, 3233, 3763, 3975, 4331, 4575, 5325, 9699, 11289, 12993, 16165, 18815, 21655, 48495, 56445, 64965, 80825, 94075, 108275, 229543, 242475, 282225, 324825, 688629, 1147715, 3443145, 5738575, 17215725]

約数ペア:

[(1, 17215725), (3, 5738575), (5, 3443145), (15, 1147715), (25, 688629), (53, 324825), (61, 282225), (71, 242475), (75, 229543), (159, 108275), (183, 94075), (213, 80825), (265, 64965), (305, 56445), (355, 48495), (795, 21655), (915, 18815), (1065, 16165), (1325, 12993), (1525, 11289), (1775, 9699), (3233, 5325), (3763, 4575), (3975, 4331)]