21077716

素因数分解:

$2^2\times {\mathrm{11}}^3\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:181

約数の個数: 48

約数和(自身を含む): 42057792

約数和(自身を除く): 20980076

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 107, 121, 148, 214, 242, 407, 428, 484, 814, 1177, 1331, 1628, 2354, 2662, 3959, 4477, 4708, 5324, 7918, 8954, 12947, 15836, 17908, 25894, 43549, 49247, 51788, 87098, 98494, 142417, 174196, 196988, 284834, 479039, 569668, 958078, 1916156, 5269429, 10538858, 21077716]

約数ペア:

[(1, 21077716), (2, 10538858), (4, 5269429), (11, 1916156), (22, 958078), (37, 569668), (44, 479039), (74, 284834), (107, 196988), (121, 174196), (148, 142417), (214, 98494), (242, 87098), (407, 51788), (428, 49247), (484, 43549), (814, 25894), (1177, 17908), (1331, 15836), (1628, 12947), (2354, 8954), (2662, 7918), (3959, 5324), (4477, 4708)]