40789720

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{2543}}^1$

素因数の和:2955

約数の個数: 32

約数和(自身を含む): 92041920

約数和(自身を除く): 51252200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 2005, 2543, 3208, 4010, 5086, 8020, 10172, 12715, 16040, 20344, 25430, 50860, 101720, 1019743, 2039486, 4078972, 5098715, 8157944, 10197430, 20394860, 40789720]

約数ペア:

[(1, 40789720), (2, 20394860), (4, 10197430), (5, 8157944), (8, 5098715), (10, 4078972), (20, 2039486), (40, 1019743), (401, 101720), (802, 50860), (1604, 25430), (2005, 20344), (2543, 16040), (3208, 12715), (4010, 10172), (5086, 8020)]