2499220

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 5644800

約数和(自身を除く): 3145580

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 139, 145, 155, 278, 290, 310, 556, 580, 620, 695, 899, 1390, 1798, 2780, 3596, 4031, 4309, 4495, 8062, 8618, 8990, 16124, 17236, 17980, 20155, 21545, 40310, 43090, 80620, 86180, 124961, 249922, 499844, 624805, 1249610, 2499220]

約数ペア:

[(1, 2499220), (2, 1249610), (4, 624805), (5, 499844), (10, 249922), (20, 124961), (29, 86180), (31, 80620), (58, 43090), (62, 40310), (116, 21545), (124, 20155), (139, 17980), (145, 17236), (155, 16124), (278, 8990), (290, 8618), (310, 8062), (556, 4495), (580, 4309), (620, 4031), (695, 3596), (899, 2780), (1390, 1798)]