20995215

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{277}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 35014656

約数和(自身を除く): 14019441

約数列:

[1, 3, 5, 15, 31, 93, 155, 163, 277, 465, 489, 815, 831, 1385, 2445, 4155, 5053, 8587, 15159, 25265, 25761, 42935, 45151, 75795, 128805, 135453, 225755, 677265, 1399681, 4199043, 6998405, 20995215]

約数ペア:

[(1, 20995215), (3, 6998405), (5, 4199043), (15, 1399681), (31, 677265), (93, 225755), (155, 135453), (163, 128805), (277, 75795), (465, 45151), (489, 42935), (815, 25761), (831, 25265), (1385, 15159), (2445, 8587), (4155, 5053)]