21820180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2213}}^1$

素因数の和:2268

約数の個数: 48

約数和(自身を含む): 50213520

約数和(自身を除く): 28393340

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2213, 2465, 4426, 4930, 8852, 9860, 11065, 22130, 37621, 44260, 64177, 75242, 128354, 150484, 188105, 256708, 320885, 376210, 641770, 752420, 1091009, 1283540, 2182018, 4364036, 5455045, 10910090, 21820180]

約数ペア:

[(1, 21820180), (2, 10910090), (4, 5455045), (5, 4364036), (10, 2182018), (17, 1283540), (20, 1091009), (29, 752420), (34, 641770), (58, 376210), (68, 320885), (85, 256708), (116, 188105), (145, 150484), (170, 128354), (290, 75242), (340, 64177), (493, 44260), (580, 37621), (986, 22130), (1972, 11065), (2213, 9860), (2465, 8852), (4426, 4930)]