21107038

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1\times {\mathrm{1151}}^1$

素因数の和:1379

約数の個数: 16

約数和(自身を含む): 32472576

約数和(自身を除く): 11365538

約数列:

[1, 2, 53, 106, 173, 346, 1151, 2302, 9169, 18338, 61003, 122006, 199123, 398246, 10553519, 21107038]

約数ペア:

[(1, 21107038), (2, 10553519), (53, 398246), (106, 199123), (173, 122006), (346, 61003), (1151, 18338), (2302, 9169)]