205348220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{443}}^1$

素因数の和:520

約数の個数: 144

約数和(自身を含む): 561230208

約数和(自身を除く): 355881988

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 43, 44, 49, 55, 70, 77, 86, 98, 110, 140, 154, 172, 196, 215, 220, 245, 301, 308, 385, 430, 443, 473, 490, 539, 602, 770, 860, 886, 946, 980, 1078, 1204, 1505, 1540, 1772, 1892, 2107, 2156, 2215, 2365, 2695, 3010, 3101, 3311, 4214, 4430, 4730, 4873, 5390, 6020, 6202, 6622, 8428, 8860, 9460, 9746, 10535, 10780, 12404, 13244, 15505, 16555, 19049, 19492, 21070, 21707, 23177, 24365, 31010, 33110, 34111, 38098, 42140, 43414, 46354, 48730, 62020, 66220, 68222, 76196, 86828, 92708, 95245, 97460, 108535, 115885, 133343, 136444, 170555, 190490, 209539, 217070, 231770, 238777, 266686, 341110, 380980, 419078, 434140, 463540, 477554, 533372, 666715, 682220, 838156, 933401, 955108, 1047695, 1193885, 1333430, 1466773, 1866802, 2095390, 2387770, 2666860, 2933546, 3733604, 4190780, 4667005, 4775540, 5867092, 7333865, 9334010, 10267411, 14667730, 18668020, 20534822, 29335460, 41069644, 51337055, 102674110, 205348220]

約数ペア:

[(1, 205348220), (2, 102674110), (4, 51337055), (5, 41069644), (7, 29335460), (10, 20534822), (11, 18668020), (14, 14667730), (20, 10267411), (22, 9334010), (28, 7333865), (35, 5867092), (43, 4775540), (44, 4667005), (49, 4190780), (55, 3733604), (70, 2933546), (77, 2666860), (86, 2387770), (98, 2095390), (110, 1866802), (140, 1466773), (154, 1333430), (172, 1193885), (196, 1047695), (215, 955108), (220, 933401), (245, 838156), (301, 682220), (308, 666715), (385, 533372), (430, 477554), (443, 463540), (473, 434140), (490, 419078), (539, 380980), (602, 341110), (770, 266686), (860, 238777), (886, 231770), (946, 217070), (980, 209539), (1078, 190490), (1204, 170555), (1505, 136444), (1540, 133343), (1772, 115885), (1892, 108535), (2107, 97460), (2156, 95245), (2215, 92708), (2365, 86828), (2695, 76196), (3010, 68222), (3101, 66220), (3311, 62020), (4214, 48730), (4430, 46354), (4730, 43414), (4873, 42140), (5390, 38098), (6020, 34111), (6202, 33110), (6622, 31010), (8428, 24365), (8860, 23177), (9460, 21707), (9746, 21070), (10535, 19492), (10780, 19049), (12404, 16555), (13244, 15505)]