18527440

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2293}}^1$

素因数の和:2407

約数の個数: 40

約数和(自身を含む): 43521768

約数和(自身を除く): 24994328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2293, 4040, 4586, 8080, 9172, 11465, 18344, 22930, 36688, 45860, 91720, 183440, 231593, 463186, 926372, 1157965, 1852744, 2315930, 3705488, 4631860, 9263720, 18527440]

約数ペア:

[(1, 18527440), (2, 9263720), (4, 4631860), (5, 3705488), (8, 2315930), (10, 1852744), (16, 1157965), (20, 926372), (40, 463186), (80, 231593), (101, 183440), (202, 91720), (404, 45860), (505, 36688), (808, 22930), (1010, 18344), (1616, 11465), (2020, 9172), (2293, 8080), (4040, 4586)]