131720

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:137

約数の個数: 32

約数和(自身を含む): 307800

約数和(自身を除く): 176080

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 89, 148, 178, 185, 296, 356, 370, 445, 712, 740, 890, 1480, 1780, 3293, 3560, 6586, 13172, 16465, 26344, 32930, 65860, 131720]

約数ペア:

[(1, 131720), (2, 65860), (4, 32930), (5, 26344), (8, 16465), (10, 13172), (20, 6586), (37, 3560), (40, 3293), (74, 1780), (89, 1480), (148, 890), (178, 740), (185, 712), (296, 445), (356, 370)]