39666921

素因数分解:

$3^1\times 7^4\times {\mathrm{5507}}^1$

素因数の和:5538

約数の個数: 20

約数和(自身を含む): 61711632

約数和(自身を除く): 22044711

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 5507, 7203, 16521, 38549, 115647, 269843, 809529, 1888901, 5666703, 13222307, 39666921]

約数ペア:

[(1, 39666921), (3, 13222307), (7, 5666703), (21, 1888901), (49, 809529), (147, 269843), (343, 115647), (1029, 38549), (2401, 16521), (5507, 7203)]