7820140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 17287200

約数和(自身を除く): 9467060

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 97, 116, 139, 145, 194, 278, 290, 388, 485, 556, 580, 695, 970, 1390, 1940, 2780, 2813, 4031, 5626, 8062, 11252, 13483, 14065, 16124, 20155, 26966, 28130, 40310, 53932, 56260, 67415, 80620, 134830, 269660, 391007, 782014, 1564028, 1955035, 3910070, 7820140]

約数ペア:

[(1, 7820140), (2, 3910070), (4, 1955035), (5, 1564028), (10, 782014), (20, 391007), (29, 269660), (58, 134830), (97, 80620), (116, 67415), (139, 56260), (145, 53932), (194, 40310), (278, 28130), (290, 26966), (388, 20155), (485, 16124), (556, 14065), (580, 13483), (695, 11252), (970, 8062), (1390, 5626), (1940, 4031), (2780, 2813)]