20462720

素因数分解:

$2^7\times 5^1\times {\mathrm{31973}}^1$

素因数の和:31992

約数の個数: 32

約数和(自身を含む): 48920220

約数和(自身を除く): 28457500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31973, 63946, 127892, 159865, 255784, 319730, 511568, 639460, 1023136, 1278920, 2046272, 2557840, 4092544, 5115680, 10231360, 20462720]

約数ペア:

[(1, 20462720), (2, 10231360), (4, 5115680), (5, 4092544), (8, 2557840), (10, 2046272), (16, 1278920), (20, 1023136), (32, 639460), (40, 511568), (64, 319730), (80, 255784), (128, 159865), (160, 127892), (320, 63946), (640, 31973)]