21816940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57413}}^1$

素因数の和:57441

約数の個数: 24

約数和(自身を含む): 48227760

約数和(自身を除く): 26410820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57413, 114826, 229652, 287065, 574130, 1090847, 1148260, 2181694, 4363388, 5454235, 10908470, 21816940]

約数ペア:

[(1, 21816940), (2, 10908470), (4, 5454235), (5, 4363388), (10, 2181694), (19, 1148260), (20, 1090847), (38, 574130), (76, 287065), (95, 229652), (190, 114826), (380, 57413)]