21370910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8447}}^1$

素因数の和:8488

約数の個数: 32

約数和(自身を含む): 43794432

約数和(自身を除く): 22423522

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 8447, 16894, 42235, 84470, 92917, 185834, 194281, 388562, 464585, 929170, 971405, 1942810, 2137091, 4274182, 10685455, 21370910]

約数ペア:

[(1, 21370910), (2, 10685455), (5, 4274182), (10, 2137091), (11, 1942810), (22, 971405), (23, 929170), (46, 464585), (55, 388562), (110, 194281), (115, 185834), (230, 92917), (253, 84470), (506, 42235), (1265, 16894), (2530, 8447)]