20442604

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 45849888

約数和(自身を除く): 25407284

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 71, 91, 98, 113, 142, 182, 196, 226, 284, 364, 452, 497, 637, 791, 923, 994, 1274, 1469, 1582, 1846, 1988, 2548, 2938, 3164, 3479, 3692, 5537, 5876, 6461, 6958, 8023, 10283, 11074, 12922, 13916, 16046, 20566, 22148, 25844, 32092, 41132, 45227, 56161, 71981, 90454, 104299, 112322, 143962, 180908, 208598, 224644, 287924, 393127, 417196, 730093, 786254, 1460186, 1572508, 2920372, 5110651, 10221302, 20442604]

約数ペア:

[(1, 20442604), (2, 10221302), (4, 5110651), (7, 2920372), (13, 1572508), (14, 1460186), (26, 786254), (28, 730093), (49, 417196), (52, 393127), (71, 287924), (91, 224644), (98, 208598), (113, 180908), (142, 143962), (182, 112322), (196, 104299), (226, 90454), (284, 71981), (364, 56161), (452, 45227), (497, 41132), (637, 32092), (791, 25844), (923, 22148), (994, 20566), (1274, 16046), (1469, 13916), (1582, 12922), (1846, 11074), (1988, 10283), (2548, 8023), (2938, 6958), (3164, 6461), (3479, 5876), (3692, 5537)]