21374619

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^2\times {\mathrm{191}}^1$

素因数の和:347

約数の個数: 24

約数和(自身を含む): 33196032

約数和(自身を除く): 11821413

約数列:

[1, 3, 7, 21, 73, 191, 219, 511, 573, 1337, 1533, 4011, 5329, 13943, 15987, 37303, 41829, 97601, 111909, 292803, 1017839, 3053517, 7124873, 21374619]

約数ペア:

[(1, 21374619), (3, 7124873), (7, 3053517), (21, 1017839), (73, 292803), (191, 111909), (219, 97601), (511, 41829), (573, 37303), (1337, 15987), (1533, 13943), (4011, 5329)]