21786810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16889}}^1$

素因数の和:16942

約数の個数: 32

約数和(自身を含む): 53507520

約数和(自身を除く): 31720710

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 16889, 33778, 50667, 84445, 101334, 168890, 253335, 506670, 726227, 1452454, 2178681, 3631135, 4357362, 7262270, 10893405, 21786810]

約数ペア:

[(1, 21786810), (2, 10893405), (3, 7262270), (5, 4357362), (6, 3631135), (10, 2178681), (15, 1452454), (30, 726227), (43, 506670), (86, 253335), (129, 168890), (215, 101334), (258, 84445), (430, 50667), (645, 33778), (1290, 16889)]