21030581

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 26925696

約数和(自身を除く): 5895115

約数列:

[1, 11, 13, 17, 41, 143, 187, 211, 221, 451, 533, 697, 2321, 2431, 2743, 3587, 5863, 7667, 8651, 9061, 30173, 39457, 46631, 95161, 99671, 112463, 147067, 512941, 1237093, 1617737, 1911871, 21030581]

約数ペア:

[(1, 21030581), (11, 1911871), (13, 1617737), (17, 1237093), (41, 512941), (143, 147067), (187, 112463), (211, 99671), (221, 95161), (451, 46631), (533, 39457), (697, 30173), (2321, 9061), (2431, 8651), (2743, 7667), (3587, 5863)]