21068747

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{1229}}^1$

素因数の和:1346

約数の個数: 16

約数和(自身を含む): 25190400

約数和(自身を除く): 4121653

約数列:

[1, 7, 31, 79, 217, 553, 1229, 2449, 8603, 17143, 38099, 97091, 266693, 679637, 3009821, 21068747]

約数ペア:

[(1, 21068747), (7, 3009821), (31, 679637), (79, 266693), (217, 97091), (553, 38099), (1229, 17143), (2449, 8603)]