31400440

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{6947}}^1$

素因数の和:7071

約数の個数: 32

約数和(自身を含む): 71286480

約数和(自身を除く): 39886040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 6947, 13894, 27788, 34735, 55576, 69470, 138940, 277880, 785011, 1570022, 3140044, 3925055, 6280088, 7850110, 15700220, 31400440]

約数ペア:

[(1, 31400440), (2, 15700220), (4, 7850110), (5, 6280088), (8, 3925055), (10, 3140044), (20, 1570022), (40, 785011), (113, 277880), (226, 138940), (452, 69470), (565, 55576), (904, 34735), (1130, 27788), (2260, 13894), (4520, 6947)]