21408272

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{18329}}^1$

素因数の和:18410

約数の個数: 20

約数和(自身を含む): 42049020

約数和(自身を除く): 20640748

約数列:

[1, 2, 4, 8, 16, 73, 146, 292, 584, 1168, 18329, 36658, 73316, 146632, 293264, 1338017, 2676034, 5352068, 10704136, 21408272]

約数ペア:

[(1, 21408272), (2, 10704136), (4, 5352068), (8, 2676034), (16, 1338017), (73, 293264), (146, 146632), (292, 73316), (584, 36658), (1168, 18329)]