261067430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{64781}}^1$

素因数の和:64832

約数の個数: 32

約数和(自身を含む): 522402048

約数和(自身を除く): 261334618

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 64781, 129562, 323905, 647810, 842153, 1684306, 2008211, 4016422, 4210765, 8421530, 10041055, 20082110, 26106743, 52213486, 130533715, 261067430]

約数ペア:

[(1, 261067430), (2, 130533715), (5, 52213486), (10, 26106743), (13, 20082110), (26, 10041055), (31, 8421530), (62, 4210765), (65, 4016422), (130, 2008211), (155, 1684306), (310, 842153), (403, 647810), (806, 323905), (2015, 129562), (4030, 64781)]