20160720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28001}}^1$

素因数の和:28020

約数の個数: 60

約数和(自身を含む): 67708836

約数和(自身を除く): 47548116

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28001, 56002, 84003, 112004, 140005, 168006, 224008, 252009, 280010, 336012, 420015, 448016, 504018, 560020, 672024, 840030, 1008036, 1120040, 1260045, 1344048, 1680060, 2016072, 2240080, 2520090, 3360120, 4032144, 5040180, 6720240, 10080360, 20160720]

約数ペア:

[(1, 20160720), (2, 10080360), (3, 6720240), (4, 5040180), (5, 4032144), (6, 3360120), (8, 2520090), (9, 2240080), (10, 2016072), (12, 1680060), (15, 1344048), (16, 1260045), (18, 1120040), (20, 1008036), (24, 840030), (30, 672024), (36, 560020), (40, 504018), (45, 448016), (48, 420015), (60, 336012), (72, 280010), (80, 252009), (90, 224008), (120, 168006), (144, 140005), (180, 112004), (240, 84003), (360, 56002), (720, 28001)]