20162950

素因数分解:

$2^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:321

約数の個数: 48

約数和(自身を含む): 39774240

約数和(自身を除く): 19611290

約数列:

[1, 2, 5, 10, 23, 25, 46, 50, 89, 115, 178, 197, 230, 394, 445, 575, 890, 985, 1150, 1970, 2047, 2225, 4094, 4450, 4531, 4925, 9062, 9850, 10235, 17533, 20470, 22655, 35066, 45310, 51175, 87665, 102350, 113275, 175330, 226550, 403259, 438325, 806518, 876650, 2016295, 4032590, 10081475, 20162950]

約数ペア:

[(1, 20162950), (2, 10081475), (5, 4032590), (10, 2016295), (23, 876650), (25, 806518), (46, 438325), (50, 403259), (89, 226550), (115, 175330), (178, 113275), (197, 102350), (230, 87665), (394, 51175), (445, 45310), (575, 35066), (890, 22655), (985, 20470), (1150, 17533), (1970, 10235), (2047, 9850), (2225, 9062), (4094, 4925), (4450, 4531)]