21365036

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{977}}^1$

素因数の和:1070

約数の個数: 48

約数和(自身を含む): 47319552

約数和(自身を除く): 25954516

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 71, 77, 142, 154, 284, 308, 497, 781, 977, 994, 1562, 1954, 1988, 3124, 3908, 5467, 6839, 10747, 10934, 13678, 21494, 21868, 27356, 42988, 69367, 75229, 138734, 150458, 277468, 300916, 485569, 763037, 971138, 1526074, 1942276, 3052148, 5341259, 10682518, 21365036]

約数ペア:

[(1, 21365036), (2, 10682518), (4, 5341259), (7, 3052148), (11, 1942276), (14, 1526074), (22, 971138), (28, 763037), (44, 485569), (71, 300916), (77, 277468), (142, 150458), (154, 138734), (284, 75229), (308, 69367), (497, 42988), (781, 27356), (977, 21868), (994, 21494), (1562, 13678), (1954, 10934), (1988, 10747), (3124, 6839), (3908, 5467)]