20565580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{8641}}^1$

素因数の和:8674

約数の個数: 48

約数和(自身を含む): 52266816

約数和(自身を除く): 31701236

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 8641, 17282, 34564, 43205, 60487, 86410, 120974, 146897, 172820, 241948, 293794, 302435, 587588, 604870, 734485, 1028279, 1209740, 1468970, 2056558, 2937940, 4113116, 5141395, 10282790, 20565580]

約数ペア:

[(1, 20565580), (2, 10282790), (4, 5141395), (5, 4113116), (7, 2937940), (10, 2056558), (14, 1468970), (17, 1209740), (20, 1028279), (28, 734485), (34, 604870), (35, 587588), (68, 302435), (70, 293794), (85, 241948), (119, 172820), (140, 146897), (170, 120974), (238, 86410), (340, 60487), (476, 43205), (595, 34564), (1190, 17282), (2380, 8641)]