20235520

素因数分解:

$2^8\times 5^1\times {\mathrm{15809}}^1$

素因数の和:15830

約数の個数: 36

約数和(自身を含む): 48473460

約数和(自身を除く): 28237940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15809, 31618, 63236, 79045, 126472, 158090, 252944, 316180, 505888, 632360, 1011776, 1264720, 2023552, 2529440, 4047104, 5058880, 10117760, 20235520]

約数ペア:

[(1, 20235520), (2, 10117760), (4, 5058880), (5, 4047104), (8, 2529440), (10, 2023552), (16, 1264720), (20, 1011776), (32, 632360), (40, 505888), (64, 316180), (80, 252944), (128, 158090), (160, 126472), (256, 79045), (320, 63236), (640, 31618), (1280, 15809)]