199765780

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{10079}}^1$

素因数の和:11079

約数の個数: 24

約数和(自身を含む): 419973120

約数和(自身を除く): 220207340

約数列:

[1, 2, 4, 5, 10, 20, 991, 1982, 3964, 4955, 9910, 10079, 19820, 20158, 40316, 50395, 100790, 201580, 9988289, 19976578, 39953156, 49941445, 99882890, 199765780]

約数ペア:

[(1, 199765780), (2, 99882890), (4, 49941445), (5, 39953156), (10, 19976578), (20, 9988289), (991, 201580), (1982, 100790), (3964, 50395), (4955, 40316), (9910, 20158), (10079, 19820)]