305890390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{54721}}^1$

素因数の和:54784

約数の個数: 32

約数和(自身を含む): 606757536

約数和(自身を除く): 300867146

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 215, 430, 559, 1118, 2795, 5590, 54721, 109442, 273605, 547210, 711373, 1422746, 2353003, 3556865, 4706006, 7113730, 11765015, 23530030, 30589039, 61178078, 152945195, 305890390]

約数ペア:

[(1, 305890390), (2, 152945195), (5, 61178078), (10, 30589039), (13, 23530030), (26, 11765015), (43, 7113730), (65, 4706006), (86, 3556865), (130, 2353003), (215, 1422746), (430, 711373), (559, 547210), (1118, 273605), (2795, 109442), (5590, 54721)]