21216104

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{193}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 49539840

約数和(自身を除く): 28323736

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 151, 182, 193, 302, 364, 386, 604, 728, 772, 1057, 1208, 1351, 1544, 1963, 2114, 2509, 2702, 3926, 4228, 5018, 5404, 7852, 8456, 10036, 10808, 13741, 15704, 17563, 20072, 27482, 29143, 35126, 54964, 58286, 70252, 109928, 116572, 140504, 204001, 233144, 378859, 408002, 757718, 816004, 1515436, 1632008, 2652013, 3030872, 5304026, 10608052, 21216104]

約数ペア:

[(1, 21216104), (2, 10608052), (4, 5304026), (7, 3030872), (8, 2652013), (13, 1632008), (14, 1515436), (26, 816004), (28, 757718), (52, 408002), (56, 378859), (91, 233144), (104, 204001), (151, 140504), (182, 116572), (193, 109928), (302, 70252), (364, 58286), (386, 54964), (604, 35126), (728, 29143), (772, 27482), (1057, 20072), (1208, 17563), (1351, 15704), (1544, 13741), (1963, 10808), (2114, 10036), (2509, 8456), (2702, 7852), (3926, 5404), (4228, 5018)]