19984210

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{181}}^2$

素因数の和:430

約数の個数: 24

約数和(自身を含む): 36764388

約数和(自身を除く): 16780178

約数列:

[1, 2, 5, 10, 61, 122, 181, 305, 362, 610, 905, 1810, 11041, 22082, 32761, 55205, 65522, 110410, 163805, 327610, 1998421, 3996842, 9992105, 19984210]

約数ペア:

[(1, 19984210), (2, 9992105), (5, 3996842), (10, 1998421), (61, 327610), (122, 163805), (181, 110410), (305, 65522), (362, 55205), (610, 32761), (905, 22082), (1810, 11041)]