20493837

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{439}}^1$

素因数の和:487

約数の個数: 64

約数和(自身を含む): 39424000

約数和(自身を除く): 18930163

約数列:

[1, 3, 7, 9, 13, 19, 21, 27, 39, 57, 63, 91, 117, 133, 171, 189, 247, 273, 351, 399, 439, 513, 741, 819, 1197, 1317, 1729, 2223, 2457, 3073, 3591, 3951, 5187, 5707, 6669, 8341, 9219, 11853, 15561, 17121, 25023, 27657, 39949, 46683, 51363, 58387, 75069, 82971, 108433, 119847, 154089, 175161, 225207, 325299, 359541, 525483, 759031, 975897, 1078623, 1576449, 2277093, 2927691, 6831279, 20493837]

約数ペア:

[(1, 20493837), (3, 6831279), (7, 2927691), (9, 2277093), (13, 1576449), (19, 1078623), (21, 975897), (27, 759031), (39, 525483), (57, 359541), (63, 325299), (91, 225207), (117, 175161), (133, 154089), (171, 119847), (189, 108433), (247, 82971), (273, 75069), (351, 58387), (399, 51363), (439, 46683), (513, 39949), (741, 27657), (819, 25023), (1197, 17121), (1317, 15561), (1729, 11853), (2223, 9219), (2457, 8341), (3073, 6669), (3591, 5707), (3951, 5187)]