21219492

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1609}}^1$

素因数の和:1780

約数の個数: 48

約数和(自身を含む): 56981120

約数和(自身を除く): 35761628

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 157, 314, 471, 628, 942, 1099, 1609, 1884, 2198, 3218, 3297, 4396, 4827, 6436, 6594, 9654, 11263, 13188, 19308, 22526, 33789, 45052, 67578, 135156, 252613, 505226, 757839, 1010452, 1515678, 1768291, 3031356, 3536582, 5304873, 7073164, 10609746, 21219492]

約数ペア:

[(1, 21219492), (2, 10609746), (3, 7073164), (4, 5304873), (6, 3536582), (7, 3031356), (12, 1768291), (14, 1515678), (21, 1010452), (28, 757839), (42, 505226), (84, 252613), (157, 135156), (314, 67578), (471, 45052), (628, 33789), (942, 22526), (1099, 19308), (1609, 13188), (1884, 11263), (2198, 9654), (3218, 6594), (3297, 6436), (4396, 4827)]