5121220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19697}}^1$

素因数の和:19719

約数の個数: 24

約数和(自身を含む): 11582424

約数和(自身を除く): 6461204

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 19697, 39394, 78788, 98485, 196970, 256061, 393940, 512122, 1024244, 1280305, 2560610, 5121220]

約数ペア:

[(1, 5121220), (2, 2560610), (4, 1280305), (5, 1024244), (10, 512122), (13, 393940), (20, 256061), (26, 196970), (52, 98485), (65, 78788), (130, 39394), (260, 19697)]