21938290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^2\times {\mathrm{71}}^1$

素因数の和:195

約数の個数: 48

約数和(自身を含む): 44525376

約数和(自身を除く): 22587086

約数列:

[1, 2, 5, 10, 11, 22, 53, 55, 71, 106, 110, 142, 265, 355, 530, 583, 710, 781, 1166, 1562, 2809, 2915, 3763, 3905, 5618, 5830, 7526, 7810, 14045, 18815, 28090, 30899, 37630, 41393, 61798, 82786, 154495, 199439, 206965, 308990, 398878, 413930, 997195, 1994390, 2193829, 4387658, 10969145, 21938290]

約数ペア:

[(1, 21938290), (2, 10969145), (5, 4387658), (10, 2193829), (11, 1994390), (22, 997195), (53, 413930), (55, 398878), (71, 308990), (106, 206965), (110, 199439), (142, 154495), (265, 82786), (355, 61798), (530, 41393), (583, 37630), (710, 30899), (781, 28090), (1166, 18815), (1562, 14045), (2809, 7810), (2915, 7526), (3763, 5830), (3905, 5618)]