199982920

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{18049}}^1$

素因数の和:18337

約数の個数: 32

約数和(自身を含む): 451611000

約数和(自身を除く): 251628080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 11080, 18049, 36098, 72196, 90245, 144392, 180490, 360980, 721960, 4999573, 9999146, 19998292, 24997865, 39996584, 49995730, 99991460, 199982920]

約数ペア:

[(1, 199982920), (2, 99991460), (4, 49995730), (5, 39996584), (8, 24997865), (10, 19998292), (20, 9999146), (40, 4999573), (277, 721960), (554, 360980), (1108, 180490), (1385, 144392), (2216, 90245), (2770, 72196), (5540, 36098), (11080, 18049)]