18603990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{491}}^1$

素因数の和:925

約数の個数: 48

約数和(自身を含む): 48584016

約数和(自身を除く): 29980026

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 421, 491, 842, 982, 1263, 1473, 2105, 2455, 2526, 2946, 3789, 4210, 4419, 4910, 6315, 7365, 7578, 8838, 12630, 14730, 18945, 22095, 37890, 44190, 206711, 413422, 620133, 1033555, 1240266, 1860399, 2067110, 3100665, 3720798, 6201330, 9301995, 18603990]

約数ペア:

[(1, 18603990), (2, 9301995), (3, 6201330), (5, 3720798), (6, 3100665), (9, 2067110), (10, 1860399), (15, 1240266), (18, 1033555), (30, 620133), (45, 413422), (90, 206711), (421, 44190), (491, 37890), (842, 22095), (982, 18945), (1263, 14730), (1473, 12630), (2105, 8838), (2455, 7578), (2526, 7365), (2946, 6315), (3789, 4910), (4210, 4419)]