78240640

素因数分解:

$2^7\times 5^1\times {\mathrm{122251}}^1$

素因数の和:122270

約数の個数: 32

約数和(自身を含む): 187045560

約数和(自身を除く): 108804920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 122251, 244502, 489004, 611255, 978008, 1222510, 1956016, 2445020, 3912032, 4890040, 7824064, 9780080, 15648128, 19560160, 39120320, 78240640]

約数ペア:

[(1, 78240640), (2, 39120320), (4, 19560160), (5, 15648128), (8, 9780080), (10, 7824064), (16, 4890040), (20, 3912032), (32, 2445020), (40, 1956016), (64, 1222510), (80, 978008), (128, 611255), (160, 489004), (320, 244502), (640, 122251)]