21172760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75617}}^1$

素因数の和:75635

約数の個数: 32

約数和(自身を含む): 54444960

約数和(自身を除く): 33272200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75617, 151234, 302468, 378085, 529319, 604936, 756170, 1058638, 1512340, 2117276, 2646595, 3024680, 4234552, 5293190, 10586380, 21172760]

約数ペア:

[(1, 21172760), (2, 10586380), (4, 5293190), (5, 4234552), (7, 3024680), (8, 2646595), (10, 2117276), (14, 1512340), (20, 1058638), (28, 756170), (35, 604936), (40, 529319), (56, 378085), (70, 302468), (140, 151234), (280, 75617)]