21405363

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{3527}}^1$

素因数の和:3571

約数の個数: 24

約数和(自身を含む): 34659072

約数和(自身を除く): 13253709

約数列:

[1, 3, 7, 17, 21, 51, 119, 289, 357, 867, 2023, 3527, 6069, 10581, 24689, 59959, 74067, 179877, 419713, 1019303, 1259139, 3057909, 7135121, 21405363]

約数ペア:

[(1, 21405363), (3, 7135121), (7, 3057909), (17, 1259139), (21, 1019303), (51, 419713), (119, 179877), (289, 74067), (357, 59959), (867, 24689), (2023, 10581), (3527, 6069)]