20646090

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{359}}^1$

素因数の和:449

約数の個数: 80

約数和(自身を含む): 56453760

約数和(自身を除く): 35807670

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 71, 81, 90, 135, 142, 162, 213, 270, 355, 359, 405, 426, 639, 710, 718, 810, 1065, 1077, 1278, 1795, 1917, 2130, 2154, 3195, 3231, 3590, 3834, 5385, 5751, 6390, 6462, 9585, 9693, 10770, 11502, 16155, 19170, 19386, 25489, 28755, 29079, 32310, 48465, 50978, 57510, 58158, 76467, 96930, 127445, 145395, 152934, 229401, 254890, 290790, 382335, 458802, 688203, 764670, 1147005, 1376406, 2064609, 2294010, 3441015, 4129218, 6882030, 10323045, 20646090]

約数ペア:

[(1, 20646090), (2, 10323045), (3, 6882030), (5, 4129218), (6, 3441015), (9, 2294010), (10, 2064609), (15, 1376406), (18, 1147005), (27, 764670), (30, 688203), (45, 458802), (54, 382335), (71, 290790), (81, 254890), (90, 229401), (135, 152934), (142, 145395), (162, 127445), (213, 96930), (270, 76467), (355, 58158), (359, 57510), (405, 50978), (426, 48465), (639, 32310), (710, 29079), (718, 28755), (810, 25489), (1065, 19386), (1077, 19170), (1278, 16155), (1795, 11502), (1917, 10770), (2130, 9693), (2154, 9585), (3195, 6462), (3231, 6390), (3590, 5751), (3834, 5385)]