21408160

素因数分解:

$2^5\times 5^1\times {\mathrm{133801}}^1$

素因数の和:133816

約数の個数: 24

約数和(自身を含む): 50577156

約数和(自身を除く): 29168996

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133801, 267602, 535204, 669005, 1070408, 1338010, 2140816, 2676020, 4281632, 5352040, 10704080, 21408160]

約数ペア:

[(1, 21408160), (2, 10704080), (4, 5352040), (5, 4281632), (8, 2676020), (10, 2140816), (16, 1338010), (20, 1070408), (32, 669005), (40, 535204), (80, 267602), (160, 133801)]