20618960

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15161}}^1$

素因数の和:15191

約数の個数: 40

約数和(自身を含む): 50762376

約数和(自身を除く): 30143416

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15161, 30322, 60644, 75805, 121288, 151610, 242576, 257737, 303220, 515474, 606440, 1030948, 1212880, 1288685, 2061896, 2577370, 4123792, 5154740, 10309480, 20618960]

約数ペア:

[(1, 20618960), (2, 10309480), (4, 5154740), (5, 4123792), (8, 2577370), (10, 2061896), (16, 1288685), (17, 1212880), (20, 1030948), (34, 606440), (40, 515474), (68, 303220), (80, 257737), (85, 242576), (136, 151610), (170, 121288), (272, 75805), (340, 60644), (680, 30322), (1360, 15161)]