20513360

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5233}}^1$

素因数の和:5260

約数の個数: 60

約数和(自身を含む): 55490868

約数和(自身を除く): 34977508

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5233, 10466, 20932, 26165, 36631, 41864, 52330, 73262, 83728, 104660, 146524, 183155, 209320, 256417, 293048, 366310, 418640, 512834, 586096, 732620, 1025668, 1282085, 1465240, 2051336, 2564170, 2930480, 4102672, 5128340, 10256680, 20513360]

約数ペア:

[(1, 20513360), (2, 10256680), (4, 5128340), (5, 4102672), (7, 2930480), (8, 2564170), (10, 2051336), (14, 1465240), (16, 1282085), (20, 1025668), (28, 732620), (35, 586096), (40, 512834), (49, 418640), (56, 366310), (70, 293048), (80, 256417), (98, 209320), (112, 183155), (140, 146524), (196, 104660), (245, 83728), (280, 73262), (392, 52330), (490, 41864), (560, 36631), (784, 26165), (980, 20932), (1960, 10466), (3920, 5233)]