18421845

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^4\times {\mathrm{43}}^1$

素因数の和:103

約数の個数: 40

約数和(自身を含む): 32673696

約数和(自身を除く): 14251851

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 169, 195, 215, 507, 559, 645, 845, 1677, 2197, 2535, 2795, 6591, 7267, 8385, 10985, 21801, 28561, 32955, 36335, 85683, 94471, 109005, 142805, 283413, 428415, 472355, 1228123, 1417065, 3684369, 6140615, 18421845]

約数ペア:

[(1, 18421845), (3, 6140615), (5, 3684369), (13, 1417065), (15, 1228123), (39, 472355), (43, 428415), (65, 283413), (129, 142805), (169, 109005), (195, 94471), (215, 85683), (507, 36335), (559, 32955), (645, 28561), (845, 21801), (1677, 10985), (2197, 8385), (2535, 7267), (2795, 6591)]