21986291257

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{643}}^1\times {\mathrm{2417}}^1$

素因数の和:3157

約数の個数: 32

約数和(自身を含む): 26310316032

約数和(自身を除く): 4324024775

約数列:

[1, 7, 43, 47, 301, 329, 643, 2021, 2417, 4501, 14147, 16919, 27649, 30221, 103931, 113599, 193543, 211547, 727517, 795193, 1299503, 1554131, 4884757, 9096521, 10878917, 34193299, 66827633, 73044157, 467793431, 511309099, 3140898751, 21986291257]

約数ペア:

[(1, 21986291257), (7, 3140898751), (43, 511309099), (47, 467793431), (301, 73044157), (329, 66827633), (643, 34193299), (2021, 10878917), (2417, 9096521), (4501, 4884757), (14147, 1554131), (16919, 1299503), (27649, 795193), (30221, 727517), (103931, 211547), (113599, 193543)]