20424800

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^2\times {\mathrm{211}}^1$

素因数の和:253

約数の個数: 108

約数和(自身を含む): 55066788

約数和(自身を除く): 34641988

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 80, 88, 100, 110, 121, 160, 176, 200, 211, 220, 242, 275, 352, 400, 422, 440, 484, 550, 605, 800, 844, 880, 968, 1055, 1100, 1210, 1688, 1760, 1936, 2110, 2200, 2321, 2420, 3025, 3376, 3872, 4220, 4400, 4642, 4840, 5275, 6050, 6752, 8440, 8800, 9284, 9680, 10550, 11605, 12100, 16880, 18568, 19360, 21100, 23210, 24200, 25531, 33760, 37136, 42200, 46420, 48400, 51062, 58025, 74272, 84400, 92840, 96800, 102124, 116050, 127655, 168800, 185680, 204248, 232100, 255310, 371360, 408496, 464200, 510620, 638275, 816992, 928400, 1021240, 1276550, 1856800, 2042480, 2553100, 4084960, 5106200, 10212400, 20424800]

約数ペア:

[(1, 20424800), (2, 10212400), (4, 5106200), (5, 4084960), (8, 2553100), (10, 2042480), (11, 1856800), (16, 1276550), (20, 1021240), (22, 928400), (25, 816992), (32, 638275), (40, 510620), (44, 464200), (50, 408496), (55, 371360), (80, 255310), (88, 232100), (100, 204248), (110, 185680), (121, 168800), (160, 127655), (176, 116050), (200, 102124), (211, 96800), (220, 92840), (242, 84400), (275, 74272), (352, 58025), (400, 51062), (422, 48400), (440, 46420), (484, 42200), (550, 37136), (605, 33760), (800, 25531), (844, 24200), (880, 23210), (968, 21100), (1055, 19360), (1100, 18568), (1210, 16880), (1688, 12100), (1760, 11605), (1936, 10550), (2110, 9680), (2200, 9284), (2321, 8800), (2420, 8440), (3025, 6752), (3376, 6050), (3872, 5275), (4220, 4840), (4400, 4642)]