28373320

素因数分解:

$2^3\times 5^1\times {\mathrm{331}}^1\times {\mathrm{2143}}^1$

素因数の和:2485

約数の個数: 32

約数和(自身を含む): 64062720

約数和(自身を除く): 35689400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 331, 662, 1324, 1655, 2143, 2648, 3310, 4286, 6620, 8572, 10715, 13240, 17144, 21430, 42860, 85720, 709333, 1418666, 2837332, 3546665, 5674664, 7093330, 14186660, 28373320]

約数ペア:

[(1, 28373320), (2, 14186660), (4, 7093330), (5, 5674664), (8, 3546665), (10, 2837332), (20, 1418666), (40, 709333), (331, 85720), (662, 42860), (1324, 21430), (1655, 17144), (2143, 13240), (2648, 10715), (3310, 8572), (4286, 6620)]