21802060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{22247}}^1$

素因数の和:22270

約数の個数: 36

約数和(自身を含む): 53261712

約数和(自身を除く): 31459652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 22247, 44494, 88988, 111235, 155729, 222470, 311458, 444940, 622916, 778645, 1090103, 1557290, 2180206, 3114580, 4360412, 5450515, 10901030, 21802060]

約数ペア:

[(1, 21802060), (2, 10901030), (4, 5450515), (5, 4360412), (7, 3114580), (10, 2180206), (14, 1557290), (20, 1090103), (28, 778645), (35, 622916), (49, 444940), (70, 311458), (98, 222470), (140, 155729), (196, 111235), (245, 88988), (490, 44494), (980, 22247)]