18909836

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{3137}}^1$

素因数の和:3289

約数の個数: 24

約数和(自身を含む): 36375696

約数和(自身を除く): 17465860

約数列:

[1, 2, 4, 11, 22, 44, 137, 274, 548, 1507, 3014, 3137, 6028, 6274, 12548, 34507, 69014, 138028, 429769, 859538, 1719076, 4727459, 9454918, 18909836]

約数ペア:

[(1, 18909836), (2, 9454918), (4, 4727459), (11, 1719076), (22, 859538), (44, 429769), (137, 138028), (274, 69014), (548, 34507), (1507, 12548), (3014, 6274), (3137, 6028)]