21939500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{3989}}^1$

素因数の和:4019

約数の個数: 48

約数和(自身を含む): 52284960

約数和(自身を除く): 30345460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 2750, 3989, 5500, 7978, 15956, 19945, 39890, 43879, 79780, 87758, 99725, 175516, 199450, 219395, 398900, 438790, 498625, 877580, 997250, 1096975, 1994500, 2193950, 4387900, 5484875, 10969750, 21939500]

約数ペア:

[(1, 21939500), (2, 10969750), (4, 5484875), (5, 4387900), (10, 2193950), (11, 1994500), (20, 1096975), (22, 997250), (25, 877580), (44, 498625), (50, 438790), (55, 398900), (100, 219395), (110, 199450), (125, 175516), (220, 99725), (250, 87758), (275, 79780), (500, 43879), (550, 39890), (1100, 19945), (1375, 15956), (2750, 7978), (3989, 5500)]