12921237

素因数分解:

$3^2\times 7^1\times {\mathrm{317}}^1\times {\mathrm{647}}^1$

素因数の和:977

約数の個数: 24

約数和(自身を含む): 21430656

約数和(自身を除く): 8509419

約数列:

[1, 3, 7, 9, 21, 63, 317, 647, 951, 1941, 2219, 2853, 4529, 5823, 6657, 13587, 19971, 40761, 205099, 615297, 1435693, 1845891, 4307079, 12921237]

約数ペア:

[(1, 12921237), (3, 4307079), (7, 1845891), (9, 1435693), (21, 615297), (63, 205099), (317, 40761), (647, 19971), (951, 13587), (1941, 6657), (2219, 5823), (2853, 4529)]