21199711

素因数分解:

${\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:426

約数の個数: 16

約数和(自身を含む): 23496480

約数和(自身を除く): 2296769

約数列:

[1, 13, 73, 89, 251, 949, 1157, 3263, 6497, 18323, 22339, 84461, 238199, 290407, 1630747, 21199711]

約数ペア:

[(1, 21199711), (13, 1630747), (73, 290407), (89, 238199), (251, 84461), (949, 22339), (1157, 18323), (3263, 6497)]