21036675

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{593}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 38890368

約数和(自身を除く): 17853693

約数列:

[1, 3, 5, 11, 15, 25, 33, 43, 55, 75, 129, 165, 215, 275, 473, 593, 645, 825, 1075, 1419, 1779, 2365, 2965, 3225, 6523, 7095, 8895, 11825, 14825, 19569, 25499, 32615, 35475, 44475, 76497, 97845, 127495, 163075, 280489, 382485, 489225, 637475, 841467, 1402445, 1912425, 4207335, 7012225, 21036675]

約数ペア:

[(1, 21036675), (3, 7012225), (5, 4207335), (11, 1912425), (15, 1402445), (25, 841467), (33, 637475), (43, 489225), (55, 382485), (75, 280489), (129, 163075), (165, 127495), (215, 97845), (275, 76497), (473, 44475), (593, 35475), (645, 32615), (825, 25499), (1075, 19569), (1419, 14825), (1779, 11825), (2365, 8895), (2965, 7095), (3225, 6523)]