18243760

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{2351}}^1$

素因数の和:2461

約数の個数: 40

約数和(自身を含む): 42872256

約数和(自身を除く): 24628496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 2351, 3880, 4702, 7760, 9404, 11755, 18808, 23510, 37616, 47020, 94040, 188080, 228047, 456094, 912188, 1140235, 1824376, 2280470, 3648752, 4560940, 9121880, 18243760]

約数ペア:

[(1, 18243760), (2, 9121880), (4, 4560940), (5, 3648752), (8, 2280470), (10, 1824376), (16, 1140235), (20, 912188), (40, 456094), (80, 228047), (97, 188080), (194, 94040), (388, 47020), (485, 37616), (776, 23510), (970, 18808), (1552, 11755), (1940, 9404), (2351, 7760), (3880, 4702)]