19778684

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{1217}}^1$

素因数の和:1477

約数の個数: 24

約数和(自身を含む): 36832320

約数和(自身を除く): 17053636

約数列:

[1, 2, 4, 17, 34, 68, 239, 478, 956, 1217, 2434, 4063, 4868, 8126, 16252, 20689, 41378, 82756, 290863, 581726, 1163452, 4944671, 9889342, 19778684]

約数ペア:

[(1, 19778684), (2, 9889342), (4, 4944671), (17, 1163452), (34, 581726), (68, 290863), (239, 82756), (478, 41378), (956, 20689), (1217, 16252), (2434, 8126), (4063, 4868)]