78811520

素因数分解:

$2^7\times 5^1\times {\mathrm{123143}}^1$

素因数の和:123162

約数の個数: 32

約数和(自身を含む): 188410320

約数和(自身を除く): 109598800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 123143, 246286, 492572, 615715, 985144, 1231430, 1970288, 2462860, 3940576, 4925720, 7881152, 9851440, 15762304, 19702880, 39405760, 78811520]

約数ペア:

[(1, 78811520), (2, 39405760), (4, 19702880), (5, 15762304), (8, 9851440), (10, 7881152), (16, 4925720), (20, 3940576), (32, 2462860), (40, 1970288), (64, 1231430), (80, 985144), (128, 615715), (160, 492572), (320, 246286), (640, 123143)]