8205654920

素因数分解:

$2^3\times 5^1\times {\mathrm{839}}^1\times {\mathrm{244507}}^1$

素因数の和:245357

約数の個数: 32

約数和(自身を含む): 18484804800

約数和(自身を除く): 10279149880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 839, 1678, 3356, 4195, 6712, 8390, 16780, 33560, 244507, 489014, 978028, 1222535, 1956056, 2445070, 4890140, 9780280, 205141373, 410282746, 820565492, 1025706865, 1641130984, 2051413730, 4102827460, 8205654920]

約数ペア:

[(1, 8205654920), (2, 4102827460), (4, 2051413730), (5, 1641130984), (8, 1025706865), (10, 820565492), (20, 410282746), (40, 205141373), (839, 9780280), (1678, 4890140), (3356, 2445070), (4195, 1956056), (6712, 1222535), (8390, 978028), (16780, 489014), (33560, 244507)]