21378764

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{44171}}^1$

素因数の和:44197

約数の個数: 18

約数和(自身を含む): 41124132

約数和(自身を除く): 19745368

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 44171, 88342, 176684, 485881, 971762, 1943524, 5344691, 10689382, 21378764]

約数ペア:

[(1, 21378764), (2, 10689382), (4, 5344691), (11, 1943524), (22, 971762), (44, 485881), (121, 176684), (242, 88342), (484, 44171)]