20511790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{1901}}^1$

素因数の和:2004

約数の個数: 32

約数和(自身を含む): 40261536

約数和(自身を除く): 19749746

約数列:

[1, 2, 5, 10, 13, 26, 65, 83, 130, 166, 415, 830, 1079, 1901, 2158, 3802, 5395, 9505, 10790, 19010, 24713, 49426, 123565, 157783, 247130, 315566, 788915, 1577830, 2051179, 4102358, 10255895, 20511790]

約数ペア:

[(1, 20511790), (2, 10255895), (5, 4102358), (10, 2051179), (13, 1577830), (26, 788915), (65, 315566), (83, 247130), (130, 157783), (166, 123565), (415, 49426), (830, 24713), (1079, 19010), (1901, 10790), (2158, 9505), (3802, 5395)]