21205670

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{881}}^1$

素因数の和:1000

約数の個数: 32

約数和(自身を含む): 40007520

約数和(自身を除く): 18801850

約数列:

[1, 2, 5, 10, 29, 58, 83, 145, 166, 290, 415, 830, 881, 1762, 2407, 4405, 4814, 8810, 12035, 24070, 25549, 51098, 73123, 127745, 146246, 255490, 365615, 731230, 2120567, 4241134, 10602835, 21205670]

約数ペア:

[(1, 21205670), (2, 10602835), (5, 4241134), (10, 2120567), (29, 731230), (58, 365615), (83, 255490), (145, 146246), (166, 127745), (290, 73123), (415, 51098), (830, 25549), (881, 24070), (1762, 12035), (2407, 8810), (4405, 4814)]