20212480

素因数分解:

$2^8\times 5^1\times {\mathrm{15791}}^1$

素因数の和:15812

約数の個数: 36

約数和(自身を含む): 48418272

約数和(自身を除く): 28205792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15791, 31582, 63164, 78955, 126328, 157910, 252656, 315820, 505312, 631640, 1010624, 1263280, 2021248, 2526560, 4042496, 5053120, 10106240, 20212480]

約数ペア:

[(1, 20212480), (2, 10106240), (4, 5053120), (5, 4042496), (8, 2526560), (10, 2021248), (16, 1263280), (20, 1010624), (32, 631640), (40, 505312), (64, 315820), (80, 252656), (128, 157910), (160, 126328), (256, 78955), (320, 63164), (640, 31582), (1280, 15791)]