28860280

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{9133}}^1$

素因数の和:9223

約数の個数: 32

約数和(自身を含む): 65764800

約数和(自身を除く): 36904520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 9133, 18266, 36532, 45665, 73064, 91330, 182660, 365320, 721507, 1443014, 2886028, 3607535, 5772056, 7215070, 14430140, 28860280]

約数ペア:

[(1, 28860280), (2, 14430140), (4, 7215070), (5, 5772056), (8, 3607535), (10, 2886028), (20, 1443014), (40, 721507), (79, 365320), (158, 182660), (316, 91330), (395, 73064), (632, 45665), (790, 36532), (1580, 18266), (3160, 9133)]