19978620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{433}}^1\times {\mathrm{769}}^1$

素因数の和:1214

約数の個数: 48

約数和(自身を含む): 56142240

約数和(自身を除く): 36163620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 433, 769, 866, 1299, 1538, 1732, 2165, 2307, 2598, 3076, 3845, 4330, 4614, 5196, 6495, 7690, 8660, 9228, 11535, 12990, 15380, 23070, 25980, 46140, 332977, 665954, 998931, 1331908, 1664885, 1997862, 3329770, 3995724, 4994655, 6659540, 9989310, 19978620]

約数ペア:

[(1, 19978620), (2, 9989310), (3, 6659540), (4, 4994655), (5, 3995724), (6, 3329770), (10, 1997862), (12, 1664885), (15, 1331908), (20, 998931), (30, 665954), (60, 332977), (433, 46140), (769, 25980), (866, 23070), (1299, 15380), (1538, 12990), (1732, 11535), (2165, 9228), (2307, 8660), (2598, 7690), (3076, 6495), (3845, 5196), (4330, 4614)]