20958616

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7963}}^1$

素因数の和:8023

約数の個数: 32

約数和(自身を含む): 45872640

約数和(自身を除く): 24914024

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 94, 188, 329, 376, 658, 1316, 2632, 7963, 15926, 31852, 55741, 63704, 111482, 222964, 374261, 445928, 748522, 1497044, 2619827, 2994088, 5239654, 10479308, 20958616]

約数ペア:

[(1, 20958616), (2, 10479308), (4, 5239654), (7, 2994088), (8, 2619827), (14, 1497044), (28, 748522), (47, 445928), (56, 374261), (94, 222964), (188, 111482), (329, 63704), (376, 55741), (658, 31852), (1316, 15926), (2632, 7963)]