80720800

素因数分解:

$2^5\times 5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:191

約数の個数: 144

約数和(自身を含む): 212611392

約数和(自身を除く): 131890592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 41, 46, 50, 80, 82, 92, 100, 107, 115, 160, 164, 184, 200, 205, 214, 230, 328, 368, 400, 410, 428, 460, 535, 575, 656, 736, 800, 820, 856, 920, 943, 1025, 1070, 1150, 1312, 1640, 1712, 1840, 1886, 2050, 2140, 2300, 2461, 2675, 3280, 3424, 3680, 3772, 4100, 4280, 4387, 4600, 4715, 4922, 5350, 6560, 7544, 8200, 8560, 8774, 9200, 9430, 9844, 10700, 12305, 15088, 16400, 17120, 17548, 18400, 18860, 19688, 21400, 21935, 23575, 24610, 30176, 32800, 35096, 37720, 39376, 42800, 43870, 47150, 49220, 61525, 70192, 75440, 78752, 85600, 87740, 94300, 98440, 100901, 109675, 123050, 140384, 150880, 175480, 188600, 196880, 201802, 219350, 246100, 350960, 377200, 393760, 403604, 438700, 492200, 504505, 701920, 754400, 807208, 877400, 984400, 1009010, 1614416, 1754800, 1968800, 2018020, 2522525, 3228832, 3509600, 4036040, 5045050, 8072080, 10090100, 16144160, 20180200, 40360400, 80720800]

約数ペア:

[(1, 80720800), (2, 40360400), (4, 20180200), (5, 16144160), (8, 10090100), (10, 8072080), (16, 5045050), (20, 4036040), (23, 3509600), (25, 3228832), (32, 2522525), (40, 2018020), (41, 1968800), (46, 1754800), (50, 1614416), (80, 1009010), (82, 984400), (92, 877400), (100, 807208), (107, 754400), (115, 701920), (160, 504505), (164, 492200), (184, 438700), (200, 403604), (205, 393760), (214, 377200), (230, 350960), (328, 246100), (368, 219350), (400, 201802), (410, 196880), (428, 188600), (460, 175480), (535, 150880), (575, 140384), (656, 123050), (736, 109675), (800, 100901), (820, 98440), (856, 94300), (920, 87740), (943, 85600), (1025, 78752), (1070, 75440), (1150, 70192), (1312, 61525), (1640, 49220), (1712, 47150), (1840, 43870), (1886, 42800), (2050, 39376), (2140, 37720), (2300, 35096), (2461, 32800), (2675, 30176), (3280, 24610), (3424, 23575), (3680, 21935), (3772, 21400), (4100, 19688), (4280, 18860), (4387, 18400), (4600, 17548), (4715, 17120), (4922, 16400), (5350, 15088), (6560, 12305), (7544, 10700), (8200, 9844), (8560, 9430), (8774, 9200)]