21677265

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 39171600

約数和(自身を除く): 17494335

約数列:

[1, 3, 5, 9, 15, 45, 53, 61, 149, 159, 183, 265, 305, 447, 477, 549, 745, 795, 915, 1341, 2235, 2385, 2745, 3233, 6705, 7897, 9089, 9699, 16165, 23691, 27267, 29097, 39485, 45445, 48495, 71073, 81801, 118455, 136335, 145485, 355365, 409005, 481717, 1445151, 2408585, 4335453, 7225755, 21677265]

約数ペア:

[(1, 21677265), (3, 7225755), (5, 4335453), (9, 2408585), (15, 1445151), (45, 481717), (53, 409005), (61, 355365), (149, 145485), (159, 136335), (183, 118455), (265, 81801), (305, 71073), (447, 48495), (477, 45445), (549, 39485), (745, 29097), (795, 27267), (915, 23691), (1341, 16165), (2235, 9699), (2385, 9089), (2745, 7897), (3233, 6705)]