19899858

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1$

素因数の和:363

約数の個数: 64

約数和(自身を含む): 46293120

約数和(自身を除く): 26393262

約数列:

[1, 2, 3, 6, 11, 22, 29, 33, 37, 58, 66, 74, 87, 111, 174, 222, 281, 319, 407, 562, 638, 814, 843, 957, 1073, 1221, 1686, 1914, 2146, 2442, 3091, 3219, 6182, 6438, 8149, 9273, 10397, 11803, 16298, 18546, 20794, 23606, 24447, 31191, 35409, 48894, 62382, 70818, 89639, 114367, 179278, 228734, 268917, 301513, 343101, 537834, 603026, 686202, 904539, 1809078, 3316643, 6633286, 9949929, 19899858]

約数ペア:

[(1, 19899858), (2, 9949929), (3, 6633286), (6, 3316643), (11, 1809078), (22, 904539), (29, 686202), (33, 603026), (37, 537834), (58, 343101), (66, 301513), (74, 268917), (87, 228734), (111, 179278), (174, 114367), (222, 89639), (281, 70818), (319, 62382), (407, 48894), (562, 35409), (638, 31191), (814, 24447), (843, 23606), (957, 20794), (1073, 18546), (1221, 16298), (1686, 11803), (1914, 10397), (2146, 9273), (2442, 8149), (3091, 6438), (3219, 6182)]