20590328

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 43092000

約数和(自身を除く): 22501672

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 89, 121, 178, 239, 242, 356, 478, 484, 712, 956, 968, 979, 1912, 1958, 2629, 3916, 5258, 7832, 10516, 10769, 21032, 21271, 21538, 28919, 42542, 43076, 57838, 85084, 86152, 115676, 170168, 231352, 233981, 467962, 935924, 1871848, 2573791, 5147582, 10295164, 20590328]

約数ペア:

[(1, 20590328), (2, 10295164), (4, 5147582), (8, 2573791), (11, 1871848), (22, 935924), (44, 467962), (88, 233981), (89, 231352), (121, 170168), (178, 115676), (239, 86152), (242, 85084), (356, 57838), (478, 43076), (484, 42542), (712, 28919), (956, 21538), (968, 21271), (979, 21032), (1912, 10769), (1958, 10516), (2629, 7832), (3916, 5258)]