16881520

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2371}}^1$

素因数の和:2473

約数の個数: 40

約数和(自身を含む): 39707280

約数和(自身を除く): 22825760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 2371, 3560, 4742, 7120, 9484, 11855, 18968, 23710, 37936, 47420, 94840, 189680, 211019, 422038, 844076, 1055095, 1688152, 2110190, 3376304, 4220380, 8440760, 16881520]

約数ペア:

[(1, 16881520), (2, 8440760), (4, 4220380), (5, 3376304), (8, 2110190), (10, 1688152), (16, 1055095), (20, 844076), (40, 422038), (80, 211019), (89, 189680), (178, 94840), (356, 47420), (445, 37936), (712, 23710), (890, 18968), (1424, 11855), (1780, 9484), (2371, 7120), (3560, 4742)]