21384545

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1093}}^1$

素因数の和:1161

約数の個数: 32

約数和(自身を含む): 32347392

約数和(自身を除く): 10962847

約数列:

[1, 5, 7, 13, 35, 43, 65, 91, 215, 301, 455, 559, 1093, 1505, 2795, 3913, 5465, 7651, 14209, 19565, 38255, 46999, 71045, 99463, 234995, 328993, 497315, 610987, 1644965, 3054935, 4276909, 21384545]

約数ペア:

[(1, 21384545), (5, 4276909), (7, 3054935), (13, 1644965), (35, 610987), (43, 497315), (65, 328993), (91, 234995), (215, 99463), (301, 71045), (455, 46999), (559, 38255), (1093, 19565), (1505, 14209), (2795, 7651), (3913, 5465)]