81653120

素因数分解:

$2^7\times 5^1\times {\mathrm{127583}}^1$

素因数の和:127602

約数の個数: 32

約数和(自身を含む): 195203520

約数和(自身を除く): 113550400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 127583, 255166, 510332, 637915, 1020664, 1275830, 2041328, 2551660, 4082656, 5103320, 8165312, 10206640, 16330624, 20413280, 40826560, 81653120]

約数ペア:

[(1, 81653120), (2, 40826560), (4, 20413280), (5, 16330624), (8, 10206640), (10, 8165312), (16, 5103320), (20, 4082656), (32, 2551660), (40, 2041328), (64, 1275830), (80, 1020664), (128, 637915), (160, 510332), (320, 255166), (640, 127583)]