20213120

素因数分解:

$2^7\times 5^1\times {\mathrm{31583}}^1$

素因数の和:31602

約数の個数: 32

約数和(自身を含む): 48323520

約数和(自身を除く): 28110400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31583, 63166, 126332, 157915, 252664, 315830, 505328, 631660, 1010656, 1263320, 2021312, 2526640, 4042624, 5053280, 10106560, 20213120]

約数ペア:

[(1, 20213120), (2, 10106560), (4, 5053280), (5, 4042624), (8, 2526640), (10, 2021312), (16, 1263320), (20, 1010656), (32, 631660), (40, 505328), (64, 315830), (80, 252664), (128, 157915), (160, 126332), (320, 63166), (640, 31583)]