81549440

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1$

素因数の和:302

約数の個数: 128

約数和(自身を含む): 226195200

約数和(自身を除く): 144645760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 109, 112, 128, 140, 160, 167, 218, 224, 280, 320, 334, 436, 448, 545, 560, 640, 668, 763, 835, 872, 896, 1090, 1120, 1169, 1336, 1526, 1670, 1744, 2180, 2240, 2338, 2672, 3052, 3340, 3488, 3815, 4360, 4480, 4676, 5344, 5845, 6104, 6680, 6976, 7630, 8720, 9352, 10688, 11690, 12208, 13360, 13952, 15260, 17440, 18203, 18704, 21376, 23380, 24416, 26720, 30520, 34880, 36406, 37408, 46760, 48832, 53440, 61040, 69760, 72812, 74816, 91015, 93520, 97664, 106880, 122080, 127421, 145624, 149632, 182030, 187040, 244160, 254842, 291248, 364060, 374080, 488320, 509684, 582496, 637105, 728120, 748160, 1019368, 1164992, 1274210, 1456240, 2038736, 2329984, 2548420, 2912480, 4077472, 5096840, 5824960, 8154944, 10193680, 11649920, 16309888, 20387360, 40774720, 81549440]

約数ペア:

[(1, 81549440), (2, 40774720), (4, 20387360), (5, 16309888), (7, 11649920), (8, 10193680), (10, 8154944), (14, 5824960), (16, 5096840), (20, 4077472), (28, 2912480), (32, 2548420), (35, 2329984), (40, 2038736), (56, 1456240), (64, 1274210), (70, 1164992), (80, 1019368), (109, 748160), (112, 728120), (128, 637105), (140, 582496), (160, 509684), (167, 488320), (218, 374080), (224, 364060), (280, 291248), (320, 254842), (334, 244160), (436, 187040), (448, 182030), (545, 149632), (560, 145624), (640, 127421), (668, 122080), (763, 106880), (835, 97664), (872, 93520), (896, 91015), (1090, 74816), (1120, 72812), (1169, 69760), (1336, 61040), (1526, 53440), (1670, 48832), (1744, 46760), (2180, 37408), (2240, 36406), (2338, 34880), (2672, 30520), (3052, 26720), (3340, 24416), (3488, 23380), (3815, 21376), (4360, 18704), (4480, 18203), (4676, 17440), (5344, 15260), (5845, 13952), (6104, 13360), (6680, 12208), (6976, 11690), (7630, 10688), (8720, 9352)]