20181350

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{23}}^2\times {\mathrm{109}}^1$

素因数の和:174

約数の個数: 72

約数和(自身を含む): 45257520

約数和(自身を除く): 25076170

約数列:

[1, 2, 5, 7, 10, 14, 23, 25, 35, 46, 50, 70, 109, 115, 161, 175, 218, 230, 322, 350, 529, 545, 575, 763, 805, 1058, 1090, 1150, 1526, 1610, 2507, 2645, 2725, 3703, 3815, 4025, 5014, 5290, 5450, 7406, 7630, 8050, 12535, 13225, 17549, 18515, 19075, 25070, 26450, 35098, 37030, 38150, 57661, 62675, 87745, 92575, 115322, 125350, 175490, 185150, 288305, 403627, 438725, 576610, 807254, 877450, 1441525, 2018135, 2883050, 4036270, 10090675, 20181350]

約数ペア:

[(1, 20181350), (2, 10090675), (5, 4036270), (7, 2883050), (10, 2018135), (14, 1441525), (23, 877450), (25, 807254), (35, 576610), (46, 438725), (50, 403627), (70, 288305), (109, 185150), (115, 175490), (161, 125350), (175, 115322), (218, 92575), (230, 87745), (322, 62675), (350, 57661), (529, 38150), (545, 37030), (575, 35098), (763, 26450), (805, 25070), (1058, 19075), (1090, 18515), (1150, 17549), (1526, 13225), (1610, 12535), (2507, 8050), (2645, 7630), (2725, 7406), (3703, 5450), (3815, 5290), (4025, 5014)]