21167972360

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1077799}}^1$

素因数の和:1078301

約数の個数: 32

約数和(自身を含む): 47724984000

約数和(自身を除く): 26557011640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 9820, 19640, 1077799, 2155598, 4311196, 5388995, 8622392, 10777990, 21555980, 43111960, 529199309, 1058398618, 2116797236, 2645996545, 4233594472, 5291993090, 10583986180, 21167972360]

約数ペア:

[(1, 21167972360), (2, 10583986180), (4, 5291993090), (5, 4233594472), (8, 2645996545), (10, 2116797236), (20, 1058398618), (40, 529199309), (491, 43111960), (982, 21555980), (1964, 10777990), (2455, 8622392), (3928, 5388995), (4910, 4311196), (9820, 2155598), (19640, 1077799)]