21277997

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1427}}^1$

素因数の和:1508

約数の個数: 16

約数和(自身を含む): 24310272

約数和(自身を除く): 3032275

約数列:

[1, 13, 31, 37, 403, 481, 1147, 1427, 14911, 18551, 44237, 52799, 575081, 686387, 1636769, 21277997]

約数ペア:

[(1, 21277997), (13, 1636769), (31, 686387), (37, 575081), (403, 52799), (481, 44237), (1147, 18551), (1427, 14911)]