21887220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1289}}^1$

素因数の和:1584

約数の個数: 48

約数和(自身を含む): 61548480

約数和(自身を除く): 39661260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 283, 566, 849, 1132, 1289, 1415, 1698, 2578, 2830, 3396, 3867, 4245, 5156, 5660, 6445, 7734, 8490, 12890, 15468, 16980, 19335, 25780, 38670, 77340, 364787, 729574, 1094361, 1459148, 1823935, 2188722, 3647870, 4377444, 5471805, 7295740, 10943610, 21887220]

約数ペア:

[(1, 21887220), (2, 10943610), (3, 7295740), (4, 5471805), (5, 4377444), (6, 3647870), (10, 2188722), (12, 1823935), (15, 1459148), (20, 1094361), (30, 729574), (60, 364787), (283, 77340), (566, 38670), (849, 25780), (1132, 19335), (1289, 16980), (1415, 15468), (1698, 12890), (2578, 8490), (2830, 7734), (3396, 6445), (3867, 5660), (4245, 5156)]