21117214

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:252

約数の個数: 32

約数和(自身を含む): 34128864

約数和(自身を除く): 13011650

約数列:

[1, 2, 41, 43, 53, 82, 86, 106, 113, 226, 1763, 2173, 2279, 3526, 4346, 4558, 4633, 4859, 5989, 9266, 9718, 11978, 93439, 186878, 199219, 245549, 257527, 398438, 491098, 515054, 10558607, 21117214]

約数ペア:

[(1, 21117214), (2, 10558607), (41, 515054), (43, 491098), (53, 398438), (82, 257527), (86, 245549), (106, 199219), (113, 186878), (226, 93439), (1763, 11978), (2173, 9718), (2279, 9266), (3526, 5989), (4346, 4859), (4558, 4633)]