21355140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2267}}^1$

素因数の和:2436

約数の個数: 48

約数和(自身を含む): 60201792

約数和(自身を除く): 38846652

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 157, 314, 471, 628, 785, 942, 1570, 1884, 2267, 2355, 3140, 4534, 4710, 6801, 9068, 9420, 11335, 13602, 22670, 27204, 34005, 45340, 68010, 136020, 355919, 711838, 1067757, 1423676, 1779595, 2135514, 3559190, 4271028, 5338785, 7118380, 10677570, 21355140]

約数ペア:

[(1, 21355140), (2, 10677570), (3, 7118380), (4, 5338785), (5, 4271028), (6, 3559190), (10, 2135514), (12, 1779595), (15, 1423676), (20, 1067757), (30, 711838), (60, 355919), (157, 136020), (314, 68010), (471, 45340), (628, 34005), (785, 27204), (942, 22670), (1570, 13602), (1884, 11335), (2267, 9420), (2355, 9068), (3140, 6801), (4534, 4710)]