20805560

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4603}}^1$

素因数の和:4727

約数の個数: 32

約数和(自身を含む): 47237040

約数和(自身を除く): 26431480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 4603, 9206, 18412, 23015, 36824, 46030, 92060, 184120, 520139, 1040278, 2080556, 2600695, 4161112, 5201390, 10402780, 20805560]

約数ペア:

[(1, 20805560), (2, 10402780), (4, 5201390), (5, 4161112), (8, 2600695), (10, 2080556), (20, 1040278), (40, 520139), (113, 184120), (226, 92060), (452, 46030), (565, 36824), (904, 23015), (1130, 18412), (2260, 9206), (4520, 4603)]