81699200

素因数分解:

$2^7\times 5^2\times {\mathrm{11}}^2\times {\mathrm{211}}^1$

素因数の和:257

約数の個数: 144

約数和(自身を含む): 222889380

約数和(自身を除く): 141190180

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 64, 80, 88, 100, 110, 121, 128, 160, 176, 200, 211, 220, 242, 275, 320, 352, 400, 422, 440, 484, 550, 605, 640, 704, 800, 844, 880, 968, 1055, 1100, 1210, 1408, 1600, 1688, 1760, 1936, 2110, 2200, 2321, 2420, 3025, 3200, 3376, 3520, 3872, 4220, 4400, 4642, 4840, 5275, 6050, 6752, 7040, 7744, 8440, 8800, 9284, 9680, 10550, 11605, 12100, 13504, 15488, 16880, 17600, 18568, 19360, 21100, 23210, 24200, 25531, 27008, 33760, 35200, 37136, 38720, 42200, 46420, 48400, 51062, 58025, 67520, 74272, 77440, 84400, 92840, 96800, 102124, 116050, 127655, 135040, 148544, 168800, 185680, 193600, 204248, 232100, 255310, 297088, 337600, 371360, 387200, 408496, 464200, 510620, 638275, 675200, 742720, 816992, 928400, 1021240, 1276550, 1485440, 1633984, 1856800, 2042480, 2553100, 3267968, 3713600, 4084960, 5106200, 7427200, 8169920, 10212400, 16339840, 20424800, 40849600, 81699200]

約数ペア:

[(1, 81699200), (2, 40849600), (4, 20424800), (5, 16339840), (8, 10212400), (10, 8169920), (11, 7427200), (16, 5106200), (20, 4084960), (22, 3713600), (25, 3267968), (32, 2553100), (40, 2042480), (44, 1856800), (50, 1633984), (55, 1485440), (64, 1276550), (80, 1021240), (88, 928400), (100, 816992), (110, 742720), (121, 675200), (128, 638275), (160, 510620), (176, 464200), (200, 408496), (211, 387200), (220, 371360), (242, 337600), (275, 297088), (320, 255310), (352, 232100), (400, 204248), (422, 193600), (440, 185680), (484, 168800), (550, 148544), (605, 135040), (640, 127655), (704, 116050), (800, 102124), (844, 96800), (880, 92840), (968, 84400), (1055, 77440), (1100, 74272), (1210, 67520), (1408, 58025), (1600, 51062), (1688, 48400), (1760, 46420), (1936, 42200), (2110, 38720), (2200, 37136), (2321, 35200), (2420, 33760), (3025, 27008), (3200, 25531), (3376, 24200), (3520, 23210), (3872, 21100), (4220, 19360), (4400, 18568), (4642, 17600), (4840, 16880), (5275, 15488), (6050, 13504), (6752, 12100), (7040, 11605), (7744, 10550), (8440, 9680), (8800, 9284)]