21532749

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 34110720

約数和(自身を除く): 12577971

約数列:

[1, 3, 7, 21, 41, 89, 123, 267, 281, 287, 623, 843, 861, 1869, 1967, 3649, 5901, 10947, 11521, 25009, 25543, 34563, 75027, 76629, 80647, 175063, 241941, 525189, 1025369, 3076107, 7177583, 21532749]

約数ペア:

[(1, 21532749), (3, 7177583), (7, 3076107), (21, 1025369), (41, 525189), (89, 241941), (123, 175063), (267, 80647), (281, 76629), (287, 75027), (623, 34563), (843, 25543), (861, 25009), (1869, 11521), (1967, 10947), (3649, 5901)]