21504240

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29867}}^1$

素因数の和:29886

約数の個数: 60

約数和(自身を含む): 72220824

約数和(自身を除く): 50716584

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, 29867, 59734, 89601, 119468, 149335, 179202, 238936, 268803, 298670, 358404, 448005, 477872, 537606, 597340, 716808, 896010, 1075212, 1194680, 1344015, 1433616, 1792020, 2150424, 2389360, 2688030, 3584040, 4300848, 5376060, 7168080, 10752120, 21504240]

約数ペア:

[(1, 21504240), (2, 10752120), (3, 7168080), (4, 5376060), (5, 4300848), (6, 3584040), (8, 2688030), (9, 2389360), (10, 2150424), (12, 1792020), (15, 1433616), (16, 1344015), (18, 1194680), (20, 1075212), (24, 896010), (30, 716808), (36, 597340), (40, 537606), (45, 477872), (48, 448005), (60, 358404), (72, 298670), (80, 268803), (90, 238936), (120, 179202), (144, 149335), (180, 119468), (240, 89601), (360, 59734), (720, 29867)]