21769580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1187}}^1$

素因数の和:1334

約数の個数: 48

約数和(自身を含む): 52690176

約数和(自身を除く): 30920596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1187, 1310, 1834, 2374, 2620, 3668, 4585, 4748, 5935, 8309, 9170, 11870, 16618, 18340, 23740, 33236, 41545, 83090, 155497, 166180, 310994, 621988, 777485, 1088479, 1554970, 2176958, 3109940, 4353916, 5442395, 10884790, 21769580]

約数ペア:

[(1, 21769580), (2, 10884790), (4, 5442395), (5, 4353916), (7, 3109940), (10, 2176958), (14, 1554970), (20, 1088479), (28, 777485), (35, 621988), (70, 310994), (131, 166180), (140, 155497), (262, 83090), (524, 41545), (655, 33236), (917, 23740), (1187, 18340), (1310, 16618), (1834, 11870), (2374, 9170), (2620, 8309), (3668, 5935), (4585, 4748)]