127421690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{5821}}^1$

素因数の和:6038

約数の個数: 32

約数和(自身を含む): 251510400

約数和(自身を除く): 124088710

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 199, 398, 995, 1990, 2189, 4378, 5821, 10945, 11642, 21890, 29105, 58210, 64031, 128062, 320155, 640310, 1158379, 2316758, 5791895, 11583790, 12742169, 25484338, 63710845, 127421690]

約数ペア:

[(1, 127421690), (2, 63710845), (5, 25484338), (10, 12742169), (11, 11583790), (22, 5791895), (55, 2316758), (110, 1158379), (199, 640310), (398, 320155), (995, 128062), (1990, 64031), (2189, 58210), (4378, 29105), (5821, 21890), (10945, 11642)]