21240720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29501}}^1$

素因数の和:29520

約数の個数: 60

約数和(自身を含む): 71335836

約数和(自身を除く): 50095116

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, 29501, 59002, 88503, 118004, 147505, 177006, 236008, 265509, 295010, 354012, 442515, 472016, 531018, 590020, 708024, 885030, 1062036, 1180040, 1327545, 1416048, 1770060, 2124072, 2360080, 2655090, 3540120, 4248144, 5310180, 7080240, 10620360, 21240720]

約数ペア:

[(1, 21240720), (2, 10620360), (3, 7080240), (4, 5310180), (5, 4248144), (6, 3540120), (8, 2655090), (9, 2360080), (10, 2124072), (12, 1770060), (15, 1416048), (16, 1327545), (18, 1180040), (20, 1062036), (24, 885030), (30, 708024), (36, 590020), (40, 531018), (45, 472016), (48, 442515), (60, 354012), (72, 295010), (80, 265509), (90, 236008), (120, 177006), (144, 147505), (180, 118004), (240, 88503), (360, 59002), (720, 29501)]