199971080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{161267}}^1$

素因数の和:161309

約数の個数: 32

約数和(自身を含む): 464451840

約数和(自身を除く): 264480760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 161267, 322534, 645068, 806335, 1290136, 1612670, 3225340, 4999277, 6450680, 9998554, 19997108, 24996385, 39994216, 49992770, 99985540, 199971080]

約数ペア:

[(1, 199971080), (2, 99985540), (4, 49992770), (5, 39994216), (8, 24996385), (10, 19997108), (20, 9998554), (31, 6450680), (40, 4999277), (62, 3225340), (124, 1612670), (155, 1290136), (248, 806335), (310, 645068), (620, 322534), (1240, 161267)]