20978484

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{2621}}^1$

素因数の和:2680

約数の個数: 48

約数和(自身を含む): 52859520

約数和(自身を除く): 31881036

約数列:

[1, 2, 3, 4, 6, 12, 23, 29, 46, 58, 69, 87, 92, 116, 138, 174, 276, 348, 667, 1334, 2001, 2621, 2668, 4002, 5242, 7863, 8004, 10484, 15726, 31452, 60283, 76009, 120566, 152018, 180849, 228027, 241132, 304036, 361698, 456054, 723396, 912108, 1748207, 3496414, 5244621, 6992828, 10489242, 20978484]

約数ペア:

[(1, 20978484), (2, 10489242), (3, 6992828), (4, 5244621), (6, 3496414), (12, 1748207), (23, 912108), (29, 723396), (46, 456054), (58, 361698), (69, 304036), (87, 241132), (92, 228027), (116, 180849), (138, 152018), (174, 120566), (276, 76009), (348, 60283), (667, 31452), (1334, 15726), (2001, 10484), (2621, 8004), (2668, 7863), (4002, 5242)]