19509220

素因数分解:

$2^2\times 5^1\times {\mathrm{487}}^1\times {\mathrm{2003}}^1$

素因数の和:2499

約数の個数: 24

約数和(自身を含む): 41073984

約数和(自身を除く): 21564764

約数列:

[1, 2, 4, 5, 10, 20, 487, 974, 1948, 2003, 2435, 4006, 4870, 8012, 9740, 10015, 20030, 40060, 975461, 1950922, 3901844, 4877305, 9754610, 19509220]

約数ペア:

[(1, 19509220), (2, 9754610), (4, 4877305), (5, 3901844), (10, 1950922), (20, 975461), (487, 40060), (974, 20030), (1948, 10015), (2003, 9740), (2435, 8012), (4006, 4870)]