2020460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 4821600

約数和(自身を除く): 2801140

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 409, 494, 818, 988, 1235, 1636, 2045, 2470, 4090, 4940, 5317, 7771, 8180, 10634, 15542, 21268, 26585, 31084, 38855, 53170, 77710, 101023, 106340, 155420, 202046, 404092, 505115, 1010230, 2020460]

約数ペア:

[(1, 2020460), (2, 1010230), (4, 505115), (5, 404092), (10, 202046), (13, 155420), (19, 106340), (20, 101023), (26, 77710), (38, 53170), (52, 38855), (65, 31084), (76, 26585), (95, 21268), (130, 15542), (190, 10634), (247, 8180), (260, 7771), (380, 5317), (409, 4940), (494, 4090), (818, 2470), (988, 2045), (1235, 1636)]