21490002

素因数分解:

$2^1\times 3^3\times {\mathrm{397963}}^1$

素因数の和:397974

約数の個数: 16

約数和(自身を含む): 47755680

約数和(自身を除く): 26265678

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 397963, 795926, 1193889, 2387778, 3581667, 7163334, 10745001, 21490002]

約数ペア:

[(1, 21490002), (2, 10745001), (3, 7163334), (6, 3581667), (9, 2387778), (18, 1193889), (27, 795926), (54, 397963)]