18499760

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3257}}^1$

素因数の和:3341

約数の個数: 40

約数和(自身を含む): 43631136

約数和(自身を除く): 25131376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3257, 5680, 6514, 13028, 16285, 26056, 32570, 52112, 65140, 130280, 231247, 260560, 462494, 924988, 1156235, 1849976, 2312470, 3699952, 4624940, 9249880, 18499760]

約数ペア:

[(1, 18499760), (2, 9249880), (4, 4624940), (5, 3699952), (8, 2312470), (10, 1849976), (16, 1156235), (20, 924988), (40, 462494), (71, 260560), (80, 231247), (142, 130280), (284, 65140), (355, 52112), (568, 32570), (710, 26056), (1136, 16285), (1420, 13028), (2840, 6514), (3257, 5680)]