21013197

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 30602880

約数和(自身を除く): 9589683

約数列:

[1, 3, 29, 41, 43, 87, 123, 129, 137, 411, 1189, 1247, 1763, 3567, 3741, 3973, 5289, 5617, 5891, 11919, 16851, 17673, 51127, 153381, 162893, 170839, 241531, 488679, 512517, 724593, 7004399, 21013197]

約数ペア:

[(1, 21013197), (3, 7004399), (29, 724593), (41, 512517), (43, 488679), (87, 241531), (123, 170839), (129, 162893), (137, 153381), (411, 51127), (1189, 17673), (1247, 16851), (1763, 11919), (3567, 5891), (3741, 5617), (3973, 5289)]