21423460

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{859}}^1$

素因数の和:940

約数の個数: 48

約数和(自身を含む): 47678400

約数和(自身を除く): 26254940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 859, 860, 1247, 1718, 2494, 3436, 4295, 4988, 6235, 8590, 12470, 17180, 24911, 24940, 36937, 49822, 73874, 99644, 124555, 147748, 184685, 249110, 369370, 498220, 738740, 1071173, 2142346, 4284692, 5355865, 10711730, 21423460]

約数ペア:

[(1, 21423460), (2, 10711730), (4, 5355865), (5, 4284692), (10, 2142346), (20, 1071173), (29, 738740), (43, 498220), (58, 369370), (86, 249110), (116, 184685), (145, 147748), (172, 124555), (215, 99644), (290, 73874), (430, 49822), (580, 36937), (859, 24940), (860, 24911), (1247, 17180), (1718, 12470), (2494, 8590), (3436, 6235), (4295, 4988)]