20509480

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30161}}^1$

素因数の和:30189

約数の個数: 32

約数和(自身を含む): 48862440

約数和(自身を除く): 28352960

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30161, 60322, 120644, 150805, 241288, 301610, 512737, 603220, 1025474, 1206440, 2050948, 2563685, 4101896, 5127370, 10254740, 20509480]

約数ペア:

[(1, 20509480), (2, 10254740), (4, 5127370), (5, 4101896), (8, 2563685), (10, 2050948), (17, 1206440), (20, 1025474), (34, 603220), (40, 512737), (68, 301610), (85, 241288), (136, 150805), (170, 120644), (340, 60322), (680, 30161)]