21091428

素因数分解:

$2^2\times 3^7\times {\mathrm{2411}}^1$

素因数の和:2436

約数の個数: 48

約数和(自身を含む): 55379520

約数和(自身を除く): 34288092

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 729, 972, 1458, 2187, 2411, 2916, 4374, 4822, 7233, 8748, 9644, 14466, 21699, 28932, 43398, 65097, 86796, 130194, 195291, 260388, 390582, 585873, 781164, 1171746, 1757619, 2343492, 3515238, 5272857, 7030476, 10545714, 21091428]

約数ペア:

[(1, 21091428), (2, 10545714), (3, 7030476), (4, 5272857), (6, 3515238), (9, 2343492), (12, 1757619), (18, 1171746), (27, 781164), (36, 585873), (54, 390582), (81, 260388), (108, 195291), (162, 130194), (243, 86796), (324, 65097), (486, 43398), (729, 28932), (972, 21699), (1458, 14466), (2187, 9644), (2411, 8748), (2916, 7233), (4374, 4822)]