81996304

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23189}}^1$

素因数の和:23227

約数の個数: 40

約数和(自身を含む): 181160280

約数和(自身を除く): 99163976

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 23189, 46378, 92756, 185512, 301457, 371024, 394213, 602914, 788426, 1205828, 1576852, 2411656, 3153704, 4823312, 5124769, 6307408, 10249538, 20499076, 40998152, 81996304]

約数ペア:

[(1, 81996304), (2, 40998152), (4, 20499076), (8, 10249538), (13, 6307408), (16, 5124769), (17, 4823312), (26, 3153704), (34, 2411656), (52, 1576852), (68, 1205828), (104, 788426), (136, 602914), (208, 394213), (221, 371024), (272, 301457), (442, 185512), (884, 92756), (1768, 46378), (3536, 23189)]