20935740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7121}}^1$

素因数の和:7147

約数の個数: 72

約数和(自身を含む): 68200272

約数和(自身を除く): 47264532

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 7121, 14242, 21363, 28484, 35605, 42726, 49847, 71210, 85452, 99694, 106815, 142420, 149541, 199388, 213630, 249235, 299082, 348929, 427260, 498470, 598164, 697858, 747705, 996940, 1046787, 1395716, 1495410, 1744645, 2093574, 2990820, 3489290, 4187148, 5233935, 6978580, 10467870, 20935740]

約数ペア:

[(1, 20935740), (2, 10467870), (3, 6978580), (4, 5233935), (5, 4187148), (6, 3489290), (7, 2990820), (10, 2093574), (12, 1744645), (14, 1495410), (15, 1395716), (20, 1046787), (21, 996940), (28, 747705), (30, 697858), (35, 598164), (42, 498470), (49, 427260), (60, 348929), (70, 299082), (84, 249235), (98, 213630), (105, 199388), (140, 149541), (147, 142420), (196, 106815), (210, 99694), (245, 85452), (294, 71210), (420, 49847), (490, 42726), (588, 35605), (735, 28484), (980, 21363), (1470, 14242), (2940, 7121)]