21720120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{181001}}^1$

素因数の和:181015

約数の個数: 32

約数和(自身を含む): 65160720

約数和(自身を除く): 43440600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 181001, 362002, 543003, 724004, 905005, 1086006, 1448008, 1810010, 2172012, 2715015, 3620020, 4344024, 5430030, 7240040, 10860060, 21720120]

約数ペア:

[(1, 21720120), (2, 10860060), (3, 7240040), (4, 5430030), (5, 4344024), (6, 3620020), (8, 2715015), (10, 2172012), (12, 1810010), (15, 1448008), (20, 1086006), (24, 905005), (30, 724004), (40, 543003), (60, 362002), (120, 181001)]