20104960

素因数分解:

$2^8\times 5^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:273

約数の個数: 72

約数和(自身を含む): 48933360

約数和(自身を除く): 28828400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 113, 128, 139, 160, 226, 256, 278, 320, 452, 556, 565, 640, 695, 904, 1112, 1130, 1280, 1390, 1808, 2224, 2260, 2780, 3616, 4448, 4520, 5560, 7232, 8896, 9040, 11120, 14464, 15707, 17792, 18080, 22240, 28928, 31414, 35584, 36160, 44480, 62828, 72320, 78535, 88960, 125656, 144640, 157070, 177920, 251312, 314140, 502624, 628280, 1005248, 1256560, 2010496, 2513120, 4020992, 5026240, 10052480, 20104960]

約数ペア:

[(1, 20104960), (2, 10052480), (4, 5026240), (5, 4020992), (8, 2513120), (10, 2010496), (16, 1256560), (20, 1005248), (32, 628280), (40, 502624), (64, 314140), (80, 251312), (113, 177920), (128, 157070), (139, 144640), (160, 125656), (226, 88960), (256, 78535), (278, 72320), (320, 62828), (452, 44480), (556, 36160), (565, 35584), (640, 31414), (695, 28928), (904, 22240), (1112, 18080), (1130, 17792), (1280, 15707), (1390, 14464), (1808, 11120), (2224, 9040), (2260, 8896), (2780, 7232), (3616, 5560), (4448, 4520)]