21668540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{631}}^1$

素因数の和:758

約数の個数: 48

約数和(自身を含む): 48734784

約数和(自身を除く): 27066244

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 101, 170, 202, 340, 404, 505, 631, 1010, 1262, 1717, 2020, 2524, 3155, 3434, 6310, 6868, 8585, 10727, 12620, 17170, 21454, 34340, 42908, 53635, 63731, 107270, 127462, 214540, 254924, 318655, 637310, 1083427, 1274620, 2166854, 4333708, 5417135, 10834270, 21668540]

約数ペア:

[(1, 21668540), (2, 10834270), (4, 5417135), (5, 4333708), (10, 2166854), (17, 1274620), (20, 1083427), (34, 637310), (68, 318655), (85, 254924), (101, 214540), (170, 127462), (202, 107270), (340, 63731), (404, 53635), (505, 42908), (631, 34340), (1010, 21454), (1262, 17170), (1717, 12620), (2020, 10727), (2524, 8585), (3155, 6868), (3434, 6310)]