20762476

素因数分解:

$2^2\times 7^3\times {\mathrm{37}}^1\times {\mathrm{409}}^1$

素因数の和:471

約数の個数: 48

約数和(自身を含む): 43624000

約数和(自身を除く): 22861524

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 98, 148, 196, 259, 343, 409, 518, 686, 818, 1036, 1372, 1636, 1813, 2863, 3626, 5726, 7252, 11452, 12691, 15133, 20041, 25382, 30266, 40082, 50764, 60532, 80164, 105931, 140287, 211862, 280574, 423724, 561148, 741517, 1483034, 2966068, 5190619, 10381238, 20762476]

約数ペア:

[(1, 20762476), (2, 10381238), (4, 5190619), (7, 2966068), (14, 1483034), (28, 741517), (37, 561148), (49, 423724), (74, 280574), (98, 211862), (148, 140287), (196, 105931), (259, 80164), (343, 60532), (409, 50764), (518, 40082), (686, 30266), (818, 25382), (1036, 20041), (1372, 15133), (1636, 12691), (1813, 11452), (2863, 7252), (3626, 5726)]