78687973

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{2521}}^1$

素因数の和:2562

約数の個数: 20

約数和(自身を含む): 98897708

約数和(自身を除く): 20209735

約数列:

[1, 7, 13, 49, 91, 343, 637, 2401, 2521, 4459, 17647, 31213, 32773, 123529, 229411, 864703, 1605877, 6052921, 11241139, 78687973]

約数ペア:

[(1, 78687973), (7, 11241139), (13, 6052921), (49, 1605877), (91, 864703), (343, 229411), (637, 123529), (2401, 32773), (2521, 31213), (4459, 17647)]