9928840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2789}}^1$

素因数の和:2889

約数の個数: 32

約数和(自身を含む): 22599000

約数和(自身を除く): 12670160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 2789, 3560, 5578, 11156, 13945, 22312, 27890, 55780, 111560, 248221, 496442, 992884, 1241105, 1985768, 2482210, 4964420, 9928840]

約数ペア:

[(1, 9928840), (2, 4964420), (4, 2482210), (5, 1985768), (8, 1241105), (10, 992884), (20, 496442), (40, 248221), (89, 111560), (178, 55780), (356, 27890), (445, 22312), (712, 13945), (890, 11156), (1780, 5578), (2789, 3560)]