20449317

素因数分解:

$3^1\times 7^4\times {\mathrm{17}}^1\times {\mathrm{167}}^1$

素因数の和:215

約数の個数: 40

約数和(自身を含む): 33880896

約数和(自身を除く): 13431579

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 167, 343, 357, 501, 833, 1029, 1169, 2401, 2499, 2839, 3507, 5831, 7203, 8183, 8517, 17493, 19873, 24549, 40817, 57281, 59619, 122451, 139111, 171843, 400967, 417333, 973777, 1202901, 2921331, 6816439, 20449317]

約数ペア:

[(1, 20449317), (3, 6816439), (7, 2921331), (17, 1202901), (21, 973777), (49, 417333), (51, 400967), (119, 171843), (147, 139111), (167, 122451), (343, 59619), (357, 57281), (501, 40817), (833, 24549), (1029, 19873), (1169, 17493), (2401, 8517), (2499, 8183), (2839, 7203), (3507, 5831)]