128830390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{76231}}^1$

素因数の和:76264

約数の個数: 24

約数和(自身を含む): 251108208

約数和(自身を除く): 122277818

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 76231, 152462, 381155, 762310, 991003, 1982006, 4955015, 9910030, 12883039, 25766078, 64415195, 128830390]

約数ペア:

[(1, 128830390), (2, 64415195), (5, 25766078), (10, 12883039), (13, 9910030), (26, 4955015), (65, 1982006), (130, 991003), (169, 762310), (338, 381155), (845, 152462), (1690, 76231)]