20512096360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{182687}}^1$

素因数の和:183106

約数の個数: 64

約数和(自身を含む): 52877214720

約数和(自身を除く): 32365118360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 401, 802, 1604, 2005, 2807, 3208, 4010, 5614, 8020, 11228, 14035, 16040, 22456, 28070, 56140, 112280, 182687, 365374, 730748, 913435, 1278809, 1461496, 1826870, 2557618, 3653740, 5115236, 6394045, 7307480, 10230472, 12788090, 25576180, 51152360, 73257487, 146514974, 293029948, 366287435, 512802409, 586059896, 732574870, 1025604818, 1465149740, 2051209636, 2564012045, 2930299480, 4102419272, 5128024090, 10256048180, 20512096360]

約数ペア:

[(1, 20512096360), (2, 10256048180), (4, 5128024090), (5, 4102419272), (7, 2930299480), (8, 2564012045), (10, 2051209636), (14, 1465149740), (20, 1025604818), (28, 732574870), (35, 586059896), (40, 512802409), (56, 366287435), (70, 293029948), (140, 146514974), (280, 73257487), (401, 51152360), (802, 25576180), (1604, 12788090), (2005, 10230472), (2807, 7307480), (3208, 6394045), (4010, 5115236), (5614, 3653740), (8020, 2557618), (11228, 1826870), (14035, 1461496), (16040, 1278809), (22456, 913435), (28070, 730748), (56140, 365374), (112280, 182687)]