21965853

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4733}}^1$

素因数の和:4773

約数の個数: 32

約数和(自身を含む): 38174976

約数和(自身を除く): 16209123

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4641, 4733, 14199, 33131, 61529, 80461, 99393, 184587, 241383, 430703, 563227, 1045993, 1292109, 1689681, 3137979, 7321951, 21965853]

約数ペア:

[(1, 21965853), (3, 7321951), (7, 3137979), (13, 1689681), (17, 1292109), (21, 1045993), (39, 563227), (51, 430703), (91, 241383), (119, 184587), (221, 99393), (273, 80461), (357, 61529), (663, 33131), (1547, 14199), (4641, 4733)]