18267440

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{587}}^1$

素因数の和:989

約数の個数: 40

約数和(自身を含む): 42653520

約数和(自身を除く): 24386080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 587, 778, 1174, 1556, 1945, 2348, 2935, 3112, 3890, 4696, 5870, 6224, 7780, 9392, 11740, 15560, 23480, 31120, 46960, 228343, 456686, 913372, 1141715, 1826744, 2283430, 3653488, 4566860, 9133720, 18267440]

約数ペア:

[(1, 18267440), (2, 9133720), (4, 4566860), (5, 3653488), (8, 2283430), (10, 1826744), (16, 1141715), (20, 913372), (40, 456686), (80, 228343), (389, 46960), (587, 31120), (778, 23480), (1174, 15560), (1556, 11740), (1945, 9392), (2348, 7780), (2935, 6224), (3112, 5870), (3890, 4696)]