20885560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27481}}^1$

素因数の和:27511

約数の個数: 32

約数和(自身を含む): 49467600

約数和(自身を除く): 28582040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27481, 54962, 109924, 137405, 219848, 274810, 522139, 549620, 1044278, 1099240, 2088556, 2610695, 4177112, 5221390, 10442780, 20885560]

約数ペア:

[(1, 20885560), (2, 10442780), (4, 5221390), (5, 4177112), (8, 2610695), (10, 2088556), (19, 1099240), (20, 1044278), (38, 549620), (40, 522139), (76, 274810), (95, 219848), (152, 137405), (190, 109924), (380, 54962), (760, 27481)]