16921721

素因数分解:

${\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:308

約数の個数: 16

約数和(自身を含む): 18278400

約数和(自身を除く): 1356679

約数列:

[1, 23, 67, 79, 139, 1541, 1817, 3197, 5293, 9313, 10981, 121739, 214199, 252563, 735727, 16921721]

約数ペア:

[(1, 16921721), (23, 735727), (67, 252563), (79, 214199), (139, 121739), (1541, 10981), (1817, 9313), (3197, 5293)]