211229221

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{431}}^1\times {\mathrm{1321}}^1$

素因数の和:1812

約数の個数: 16

約数和(自身を含む): 246716928

約数和(自身を除く): 35487707

約数列:

[1, 7, 53, 371, 431, 1321, 3017, 9247, 22843, 70013, 159901, 490091, 569351, 3985457, 30175603, 211229221]

約数ペア:

[(1, 211229221), (7, 30175603), (53, 3985457), (371, 569351), (431, 490091), (1321, 159901), (3017, 70013), (9247, 22843)]