209938270

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{72643}}^1$

素因数の和:72684

約数の個数: 24

約数和(自身を含む): 401430744

約数和(自身を除く): 191492474

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 289, 578, 1445, 2890, 72643, 145286, 363215, 726430, 1234931, 2469862, 6174655, 12349310, 20993827, 41987654, 104969135, 209938270]

約数ペア:

[(1, 209938270), (2, 104969135), (5, 41987654), (10, 20993827), (17, 12349310), (34, 6174655), (85, 2469862), (170, 1234931), (289, 726430), (578, 363215), (1445, 145286), (2890, 72643)]