20809219844

素因数分解:

$2^2\times 7^2\times {\mathrm{113}}^1\times {\mathrm{227}}^1\times {\mathrm{4139}}^1$

素因数の和:4497

約数の個数: 72

約数和(自身を含む): 42935145120

約数和(自身を除く): 22125925276

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 113, 196, 226, 227, 452, 454, 791, 908, 1582, 1589, 3164, 3178, 4139, 5537, 6356, 8278, 11074, 11123, 16556, 22148, 22246, 25651, 28973, 44492, 51302, 57946, 102604, 115892, 179557, 202811, 359114, 405622, 467707, 718228, 811244, 935414, 939553, 1256899, 1870828, 1879106, 2513798, 3273949, 3758212, 5027596, 6547898, 6576871, 13095796, 13153742, 22917643, 26307484, 45835286, 46038097, 91670572, 92076194, 106169489, 184152388, 212338978, 424677956, 743186423, 1486372846, 2972745692, 5202304961, 10404609922, 20809219844]

約数ペア:

[(1, 20809219844), (2, 10404609922), (4, 5202304961), (7, 2972745692), (14, 1486372846), (28, 743186423), (49, 424677956), (98, 212338978), (113, 184152388), (196, 106169489), (226, 92076194), (227, 91670572), (452, 46038097), (454, 45835286), (791, 26307484), (908, 22917643), (1582, 13153742), (1589, 13095796), (3164, 6576871), (3178, 6547898), (4139, 5027596), (5537, 3758212), (6356, 3273949), (8278, 2513798), (11074, 1879106), (11123, 1870828), (16556, 1256899), (22148, 939553), (22246, 935414), (25651, 811244), (28973, 718228), (44492, 467707), (51302, 405622), (57946, 359114), (102604, 202811), (115892, 179557)]