261617590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{2753}}^1$

素因数の和:2833

約数の個数: 64

約数和(自身を含む): 549654336

約数和(自身を除く): 288036746

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 43, 65, 85, 86, 130, 170, 215, 221, 430, 442, 559, 731, 1105, 1118, 1462, 2210, 2753, 2795, 3655, 5506, 5590, 7310, 9503, 13765, 19006, 27530, 35789, 46801, 47515, 71578, 93602, 95030, 118379, 178945, 234005, 236758, 357890, 468010, 591895, 608413, 1183790, 1216826, 1538927, 2012443, 3042065, 3077854, 4024886, 6084130, 7694635, 10062215, 15389270, 20124430, 26161759, 52323518, 130808795, 261617590]

約数ペア:

[(1, 261617590), (2, 130808795), (5, 52323518), (10, 26161759), (13, 20124430), (17, 15389270), (26, 10062215), (34, 7694635), (43, 6084130), (65, 4024886), (85, 3077854), (86, 3042065), (130, 2012443), (170, 1538927), (215, 1216826), (221, 1183790), (430, 608413), (442, 591895), (559, 468010), (731, 357890), (1105, 236758), (1118, 234005), (1462, 178945), (2210, 118379), (2753, 95030), (2795, 93602), (3655, 71578), (5506, 47515), (5590, 46801), (7310, 35789), (9503, 27530), (13765, 19006)]