21851403

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^2\times {\mathrm{281}}^1$

素因数の和:344

約数の個数: 36

約数和(自身を含む): 35555688

約数和(自身を除く): 13704285

約数列:

[1, 3, 7, 21, 23, 49, 69, 147, 161, 281, 483, 529, 843, 1127, 1587, 1967, 3381, 3703, 5901, 6463, 11109, 13769, 19389, 25921, 41307, 45241, 77763, 135723, 148649, 316687, 445947, 950061, 1040543, 3121629, 7283801, 21851403]

約数ペア:

[(1, 21851403), (3, 7283801), (7, 3121629), (21, 1040543), (23, 950061), (49, 445947), (69, 316687), (147, 148649), (161, 135723), (281, 77763), (483, 45241), (529, 41307), (843, 25921), (1127, 19389), (1587, 13769), (1967, 11109), (3381, 6463), (3703, 5901)]