31811720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{10067}}^1$

素因数の和:10157

約数の個数: 32

約数和(自身を含む): 72489600

約数和(自身を除く): 40677880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 10067, 20134, 40268, 50335, 80536, 100670, 201340, 402680, 795293, 1590586, 3181172, 3976465, 6362344, 7952930, 15905860, 31811720]

約数ペア:

[(1, 31811720), (2, 15905860), (4, 7952930), (5, 6362344), (8, 3976465), (10, 3181172), (20, 1590586), (40, 795293), (79, 402680), (158, 201340), (316, 100670), (395, 80536), (632, 50335), (790, 40268), (1580, 20134), (3160, 10067)]