21971390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{1117}}^1$

素因数の和:1412

約数の個数: 32

約数和(自身を含む): 45399744

約数和(自身を除く): 23428354

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 281, 562, 1117, 1405, 1967, 2234, 2810, 3934, 5585, 7819, 9835, 11170, 15638, 19670, 39095, 78190, 313877, 627754, 1569385, 2197139, 3138770, 4394278, 10985695, 21971390]

約数ペア:

[(1, 21971390), (2, 10985695), (5, 4394278), (7, 3138770), (10, 2197139), (14, 1569385), (35, 627754), (70, 313877), (281, 78190), (562, 39095), (1117, 19670), (1405, 15638), (1967, 11170), (2234, 9835), (2810, 7819), (3934, 5585)]