19905249

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4289}}^1$

素因数の和:4329

約数の個数: 32

約数和(自身を含む): 34594560

約数和(自身を除く): 14689311

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4289, 4641, 12867, 30023, 55757, 72913, 90069, 167271, 218739, 390299, 510391, 947869, 1170897, 1531173, 2843607, 6635083, 19905249]

約数ペア:

[(1, 19905249), (3, 6635083), (7, 2843607), (13, 1531173), (17, 1170897), (21, 947869), (39, 510391), (51, 390299), (91, 218739), (119, 167271), (221, 90069), (273, 72913), (357, 55757), (663, 30023), (1547, 12867), (4289, 4641)]