201621819

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{80681}}^1$

素因数の和:80715

約数の個数: 24

約数和(自身を含む): 331118928

約数和(自身を除く): 129497109

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 80681, 242043, 564767, 1371577, 1694301, 3953369, 4114731, 9601039, 11860107, 28803117, 67207273, 201621819]

約数ペア:

[(1, 201621819), (3, 67207273), (7, 28803117), (17, 11860107), (21, 9601039), (49, 4114731), (51, 3953369), (119, 1694301), (147, 1371577), (357, 564767), (833, 242043), (2499, 80681)]