20822240

素因数分解:

$2^5\times 5^1\times {\mathrm{181}}^1\times {\mathrm{719}}^1$

素因数の和:915

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 28710880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 181, 362, 719, 724, 905, 1438, 1448, 1810, 2876, 2896, 3595, 3620, 5752, 5792, 7190, 7240, 11504, 14380, 14480, 23008, 28760, 28960, 57520, 115040, 130139, 260278, 520556, 650695, 1041112, 1301390, 2082224, 2602780, 4164448, 5205560, 10411120, 20822240]

約数ペア:

[(1, 20822240), (2, 10411120), (4, 5205560), (5, 4164448), (8, 2602780), (10, 2082224), (16, 1301390), (20, 1041112), (32, 650695), (40, 520556), (80, 260278), (160, 130139), (181, 115040), (362, 57520), (719, 28960), (724, 28760), (905, 23008), (1438, 14480), (1448, 14380), (1810, 11504), (2876, 7240), (2896, 7190), (3595, 5792), (3620, 5752)]