18201080

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4691}}^1$

素因数の和:4799

約数の個数: 32

約数和(自身を含む): 41383440

約数和(自身を除く): 23182360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 4691, 9382, 18764, 23455, 37528, 46910, 93820, 187640, 455027, 910054, 1820108, 2275135, 3640216, 4550270, 9100540, 18201080]

約数ペア:

[(1, 18201080), (2, 9100540), (4, 4550270), (5, 3640216), (8, 2275135), (10, 1820108), (20, 910054), (40, 455027), (97, 187640), (194, 93820), (388, 46910), (485, 37528), (776, 23455), (970, 18764), (1940, 9382), (3880, 4691)]