15831320

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4447}}^1$

素因数の和:4547

約数の個数: 32

約数和(自身を含む): 36028800

約数和(自身を除く): 20197480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 4447, 8894, 17788, 22235, 35576, 44470, 88940, 177880, 395783, 791566, 1583132, 1978915, 3166264, 3957830, 7915660, 15831320]

約数ペア:

[(1, 15831320), (2, 7915660), (4, 3957830), (5, 3166264), (8, 1978915), (10, 1583132), (20, 791566), (40, 395783), (89, 177880), (178, 88940), (356, 44470), (445, 35576), (712, 22235), (890, 17788), (1780, 8894), (3560, 4447)]