21809416

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{143483}}^1$

素因数の和:143508

約数の個数: 16

約数和(自身を含む): 43045200

約数和(自身を除く): 21235784

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 143483, 286966, 573932, 1147864, 2726177, 5452354, 10904708, 21809416]

約数ペア:

[(1, 21809416), (2, 10904708), (4, 5452354), (8, 2726177), (19, 1147864), (38, 573932), (76, 286966), (152, 143483)]