18287960

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6263}}^1$

素因数の和:6347

約数の個数: 32

約数和(自身を含む): 41718240

約数和(自身を除く): 23430280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6263, 12526, 25052, 31315, 50104, 62630, 125260, 250520, 457199, 914398, 1828796, 2285995, 3657592, 4571990, 9143980, 18287960]

約数ペア:

[(1, 18287960), (2, 9143980), (4, 4571990), (5, 3657592), (8, 2285995), (10, 1828796), (20, 914398), (40, 457199), (73, 250520), (146, 125260), (292, 62630), (365, 50104), (584, 31315), (730, 25052), (1460, 12526), (2920, 6263)]