18974475

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{499}}^1$

素因数の和:541

約数の個数: 54

約数和(自身を含む): 36874500

約数和(自身を除く): 17900025

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 169, 195, 225, 325, 499, 507, 585, 845, 975, 1497, 1521, 2495, 2535, 2925, 4225, 4491, 6487, 7485, 7605, 12475, 12675, 19461, 22455, 32435, 37425, 38025, 58383, 84331, 97305, 112275, 162175, 252993, 291915, 421655, 486525, 758979, 1264965, 1459575, 2108275, 3794895, 6324825, 18974475]

約数ペア:

[(1, 18974475), (3, 6324825), (5, 3794895), (9, 2108275), (13, 1459575), (15, 1264965), (25, 758979), (39, 486525), (45, 421655), (65, 291915), (75, 252993), (117, 162175), (169, 112275), (195, 97305), (225, 84331), (325, 58383), (499, 38025), (507, 37425), (585, 32435), (845, 22455), (975, 19461), (1497, 12675), (1521, 12475), (2495, 7605), (2535, 7485), (2925, 6487), (4225, 4491)]