21504260

素因数分解:

$2^2\times 5^1\times {\mathrm{829}}^1\times {\mathrm{1297}}^1$

素因数の和:2135

約数の個数: 24

約数和(自身を含む): 45248280

約数和(自身を除く): 23744020

約数列:

[1, 2, 4, 5, 10, 20, 829, 1297, 1658, 2594, 3316, 4145, 5188, 6485, 8290, 12970, 16580, 25940, 1075213, 2150426, 4300852, 5376065, 10752130, 21504260]

約数ペア:

[(1, 21504260), (2, 10752130), (4, 5376065), (5, 4300852), (10, 2150426), (20, 1075213), (829, 25940), (1297, 16580), (1658, 12970), (2594, 8290), (3316, 6485), (4145, 5188)]