20387360

素因数分解:

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

素因数の和:298

約数の個数: 96

約数和(自身を含む): 55883520

約数和(自身を除く): 35496160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 109, 112, 140, 160, 167, 218, 224, 280, 334, 436, 545, 560, 668, 763, 835, 872, 1090, 1120, 1169, 1336, 1526, 1670, 1744, 2180, 2338, 2672, 3052, 3340, 3488, 3815, 4360, 4676, 5344, 5845, 6104, 6680, 7630, 8720, 9352, 11690, 12208, 13360, 15260, 17440, 18203, 18704, 23380, 24416, 26720, 30520, 36406, 37408, 46760, 61040, 72812, 91015, 93520, 122080, 127421, 145624, 182030, 187040, 254842, 291248, 364060, 509684, 582496, 637105, 728120, 1019368, 1274210, 1456240, 2038736, 2548420, 2912480, 4077472, 5096840, 10193680, 20387360]

約数ペア:

[(1, 20387360), (2, 10193680), (4, 5096840), (5, 4077472), (7, 2912480), (8, 2548420), (10, 2038736), (14, 1456240), (16, 1274210), (20, 1019368), (28, 728120), (32, 637105), (35, 582496), (40, 509684), (56, 364060), (70, 291248), (80, 254842), (109, 187040), (112, 182030), (140, 145624), (160, 127421), (167, 122080), (218, 93520), (224, 91015), (280, 72812), (334, 61040), (436, 46760), (545, 37408), (560, 36406), (668, 30520), (763, 26720), (835, 24416), (872, 23380), (1090, 18704), (1120, 18203), (1169, 17440), (1336, 15260), (1526, 13360), (1670, 12208), (1744, 11690), (2180, 9352), (2338, 8720), (2672, 7630), (3052, 6680), (3340, 6104), (3488, 5845), (3815, 5344), (4360, 4676)]