155549720

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{15493}}^1$

素因数の和:15755

約数の個数: 32

約数和(自身を含む): 351403920

約数和(自身を除く): 195854200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 15493, 30986, 61972, 77465, 123944, 154930, 309860, 619720, 3888743, 7777486, 15554972, 19443715, 31109944, 38887430, 77774860, 155549720]

約数ペア:

[(1, 155549720), (2, 77774860), (4, 38887430), (5, 31109944), (8, 19443715), (10, 15554972), (20, 7777486), (40, 3888743), (251, 619720), (502, 309860), (1004, 154930), (1255, 123944), (2008, 77465), (2510, 61972), (5020, 30986), (10040, 15493)]