78247197

素因数分解:

$3^2\times 7^1\times {\mathrm{661}}^1\times {\mathrm{1879}}^1$

素因数の和:2553

約数の個数: 24

約数和(自身を含む): 129434240

約数和(自身を除く): 51187043

約数列:

[1, 3, 7, 9, 21, 63, 661, 1879, 1983, 4627, 5637, 5949, 13153, 13881, 16911, 39459, 41643, 118377, 1242019, 3726057, 8694133, 11178171, 26082399, 78247197]

約数ペア:

[(1, 78247197), (3, 26082399), (7, 11178171), (9, 8694133), (21, 3726057), (63, 1242019), (661, 118377), (1879, 41643), (1983, 39459), (4627, 16911), (5637, 13881), (5949, 13153)]