31171720

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{2897}}^1$

素因数の和:3177

約数の個数: 32

約数和(自身を含む): 70421400

約数和(自身を除く): 39249680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2690, 2897, 5380, 5794, 10760, 11588, 14485, 23176, 28970, 57940, 115880, 779293, 1558586, 3117172, 3896465, 6234344, 7792930, 15585860, 31171720]

約数ペア:

[(1, 31171720), (2, 15585860), (4, 7792930), (5, 6234344), (8, 3896465), (10, 3117172), (20, 1558586), (40, 779293), (269, 115880), (538, 57940), (1076, 28970), (1345, 23176), (2152, 14485), (2690, 11588), (2897, 10760), (5380, 5794)]