21491690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{4157}}^1$

素因数の和:4222

約数の個数: 32

約数和(自身を含む): 43110144

約数和(自身を除く): 21618454

約数列:

[1, 2, 5, 10, 11, 22, 47, 55, 94, 110, 235, 470, 517, 1034, 2585, 4157, 5170, 8314, 20785, 41570, 45727, 91454, 195379, 228635, 390758, 457270, 976895, 1953790, 2149169, 4298338, 10745845, 21491690]

約数ペア:

[(1, 21491690), (2, 10745845), (5, 4298338), (10, 2149169), (11, 1953790), (22, 976895), (47, 457270), (55, 390758), (94, 228635), (110, 195379), (235, 91454), (470, 45727), (517, 41570), (1034, 20785), (2585, 8314), (4157, 5170)]