20461455

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{3821}}^1$

素因数の和:3856

約数の個数: 48

約数和(自身を含む): 42928704

約数和(自身を除く): 22467249

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 85, 105, 119, 153, 255, 315, 357, 595, 765, 1071, 1785, 3821, 5355, 11463, 19105, 26747, 34389, 57315, 64957, 80241, 133735, 171945, 194871, 240723, 324785, 401205, 454699, 584613, 974355, 1203615, 1364097, 2273495, 2923065, 4092291, 6820485, 20461455]

約数ペア:

[(1, 20461455), (3, 6820485), (5, 4092291), (7, 2923065), (9, 2273495), (15, 1364097), (17, 1203615), (21, 974355), (35, 584613), (45, 454699), (51, 401205), (63, 324785), (85, 240723), (105, 194871), (119, 171945), (153, 133735), (255, 80241), (315, 64957), (357, 57315), (595, 34389), (765, 26747), (1071, 19105), (1785, 11463), (3821, 5355)]