19874985

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{449}}^1$

素因数の和:697

約数の個数: 32

約数和(自身を含む): 34473600

約数和(自身を除く): 14598615

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 227, 449, 681, 1135, 1347, 2245, 2951, 3405, 5837, 6735, 8853, 14755, 17511, 29185, 44265, 87555, 101923, 305769, 509615, 1324999, 1528845, 3974997, 6624995, 19874985]

約数ペア:

[(1, 19874985), (3, 6624995), (5, 3974997), (13, 1528845), (15, 1324999), (39, 509615), (65, 305769), (195, 101923), (227, 87555), (449, 44265), (681, 29185), (1135, 17511), (1347, 14755), (2245, 8853), (2951, 6735), (3405, 5837)]