21902180

素因数分解:

$2^2\times 5^1\times {\mathrm{829}}^1\times {\mathrm{1321}}^1$

素因数の和:2159

約数の個数: 24

約数和(自身を含む): 46084920

約数和(自身を除く): 24182740

約数列:

[1, 2, 4, 5, 10, 20, 829, 1321, 1658, 2642, 3316, 4145, 5284, 6605, 8290, 13210, 16580, 26420, 1095109, 2190218, 4380436, 5475545, 10951090, 21902180]

約数ペア:

[(1, 21902180), (2, 10951090), (4, 5475545), (5, 4380436), (10, 2190218), (20, 1095109), (829, 26420), (1321, 16580), (1658, 13210), (2642, 8290), (3316, 6605), (4145, 5284)]