18707080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{941}}^1$

素因数の和:1030

約数の個数: 64

約数和(自身を含む): 48833280

約数和(自身を除く): 30126200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 941, 994, 1420, 1882, 1988, 2485, 2840, 3764, 3976, 4705, 4970, 6587, 7528, 9410, 9940, 13174, 18820, 19880, 26348, 32935, 37640, 52696, 65870, 66811, 131740, 133622, 263480, 267244, 334055, 467677, 534488, 668110, 935354, 1336220, 1870708, 2338385, 2672440, 3741416, 4676770, 9353540, 18707080]

約数ペア:

[(1, 18707080), (2, 9353540), (4, 4676770), (5, 3741416), (7, 2672440), (8, 2338385), (10, 1870708), (14, 1336220), (20, 935354), (28, 668110), (35, 534488), (40, 467677), (56, 334055), (70, 267244), (71, 263480), (140, 133622), (142, 131740), (280, 66811), (284, 65870), (355, 52696), (497, 37640), (568, 32935), (710, 26348), (941, 19880), (994, 18820), (1420, 13174), (1882, 9940), (1988, 9410), (2485, 7528), (2840, 6587), (3764, 4970), (3976, 4705)]