20158880

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{439}}^1$

素因数の和:502

約数の個数: 96

約数和(自身を含む): 55883520

約数和(自身を除く): 35724640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 56, 70, 80, 82, 112, 140, 160, 164, 205, 224, 280, 287, 328, 410, 439, 560, 574, 656, 820, 878, 1120, 1148, 1312, 1435, 1640, 1756, 2195, 2296, 2870, 3073, 3280, 3512, 4390, 4592, 5740, 6146, 6560, 7024, 8780, 9184, 11480, 12292, 14048, 15365, 17560, 17999, 22960, 24584, 30730, 35120, 35998, 45920, 49168, 61460, 70240, 71996, 89995, 98336, 122920, 125993, 143992, 179990, 245840, 251986, 287984, 359980, 491680, 503972, 575968, 629965, 719960, 1007944, 1259930, 1439920, 2015888, 2519860, 2879840, 4031776, 5039720, 10079440, 20158880]

約数ペア:

[(1, 20158880), (2, 10079440), (4, 5039720), (5, 4031776), (7, 2879840), (8, 2519860), (10, 2015888), (14, 1439920), (16, 1259930), (20, 1007944), (28, 719960), (32, 629965), (35, 575968), (40, 503972), (41, 491680), (56, 359980), (70, 287984), (80, 251986), (82, 245840), (112, 179990), (140, 143992), (160, 125993), (164, 122920), (205, 98336), (224, 89995), (280, 71996), (287, 70240), (328, 61460), (410, 49168), (439, 45920), (560, 35998), (574, 35120), (656, 30730), (820, 24584), (878, 22960), (1120, 17999), (1148, 17560), (1312, 15365), (1435, 14048), (1640, 12292), (1756, 11480), (2195, 9184), (2296, 8780), (2870, 7024), (3073, 6560), (3280, 6146), (3512, 5740), (4390, 4592)]