21685563

素因数分解:

$3^6\times {\mathrm{151}}^1\times {\mathrm{197}}^1$

素因数の和:366

約数の個数: 28

約数和(自身を含む): 32894928

約数和(自身を除く): 11209365

約数列:

[1, 3, 9, 27, 81, 151, 197, 243, 453, 591, 729, 1359, 1773, 4077, 5319, 12231, 15957, 29747, 36693, 47871, 89241, 110079, 143613, 267723, 803169, 2409507, 7228521, 21685563]

約数ペア:

[(1, 21685563), (3, 7228521), (9, 2409507), (27, 803169), (81, 267723), (151, 143613), (197, 110079), (243, 89241), (453, 47871), (591, 36693), (729, 29747), (1359, 15957), (1773, 12231), (4077, 5319)]