81538740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1429}}^1$

素因数の和:1761

約数の個数: 72

約数和(自身を含む): 248288040

約数和(自身を除く): 166749300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 317, 634, 951, 1268, 1429, 1585, 1902, 2853, 2858, 3170, 3804, 4287, 4755, 5706, 5716, 6340, 7145, 8574, 9510, 11412, 12861, 14265, 14290, 17148, 19020, 21435, 25722, 28530, 28580, 42870, 51444, 57060, 64305, 85740, 128610, 257220, 452993, 905986, 1358979, 1811972, 2264965, 2717958, 4076937, 4529930, 5435916, 6794895, 8153874, 9059860, 13589790, 16307748, 20384685, 27179580, 40769370, 81538740]

約数ペア:

[(1, 81538740), (2, 40769370), (3, 27179580), (4, 20384685), (5, 16307748), (6, 13589790), (9, 9059860), (10, 8153874), (12, 6794895), (15, 5435916), (18, 4529930), (20, 4076937), (30, 2717958), (36, 2264965), (45, 1811972), (60, 1358979), (90, 905986), (180, 452993), (317, 257220), (634, 128610), (951, 85740), (1268, 64305), (1429, 57060), (1585, 51444), (1902, 42870), (2853, 28580), (2858, 28530), (3170, 25722), (3804, 21435), (4287, 19020), (4755, 17148), (5706, 14290), (5716, 14265), (6340, 12861), (7145, 11412), (8574, 9510)]