280141520

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1\times {\mathrm{383}}^1$

素因数の和:660

約数の個数: 80

約数和(自身を含む): 671956992

約数和(自身を除く): 391815472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 223, 328, 383, 410, 446, 656, 766, 820, 892, 1115, 1532, 1640, 1784, 1915, 2230, 3064, 3280, 3568, 3830, 4460, 6128, 7660, 8920, 9143, 15320, 15703, 17840, 18286, 30640, 31406, 36572, 45715, 62812, 73144, 78515, 85409, 91430, 125624, 146288, 157030, 170818, 182860, 251248, 314060, 341636, 365720, 427045, 628120, 683272, 731440, 854090, 1256240, 1366544, 1708180, 3416360, 3501769, 6832720, 7003538, 14007076, 17508845, 28014152, 35017690, 56028304, 70035380, 140070760, 280141520]

約数ペア:

[(1, 280141520), (2, 140070760), (4, 70035380), (5, 56028304), (8, 35017690), (10, 28014152), (16, 17508845), (20, 14007076), (40, 7003538), (41, 6832720), (80, 3501769), (82, 3416360), (164, 1708180), (205, 1366544), (223, 1256240), (328, 854090), (383, 731440), (410, 683272), (446, 628120), (656, 427045), (766, 365720), (820, 341636), (892, 314060), (1115, 251248), (1532, 182860), (1640, 170818), (1784, 157030), (1915, 146288), (2230, 125624), (3064, 91430), (3280, 85409), (3568, 78515), (3830, 73144), (4460, 62812), (6128, 45715), (7660, 36572), (8920, 31406), (9143, 30640), (15320, 18286), (15703, 17840)]