21660296

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{251}}^1$

素因数の和:354

約数の個数: 64

約数和(自身を含む): 49351680

約数和(自身を除く): 27691384

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 67, 92, 134, 161, 184, 251, 268, 322, 469, 502, 536, 644, 938, 1004, 1288, 1541, 1757, 1876, 2008, 3082, 3514, 3752, 5773, 6164, 7028, 10787, 11546, 12328, 14056, 16817, 21574, 23092, 33634, 40411, 43148, 46184, 67268, 80822, 86296, 117719, 134536, 161644, 235438, 323288, 386791, 470876, 773582, 941752, 1547164, 2707537, 3094328, 5415074, 10830148, 21660296]

約数ペア:

[(1, 21660296), (2, 10830148), (4, 5415074), (7, 3094328), (8, 2707537), (14, 1547164), (23, 941752), (28, 773582), (46, 470876), (56, 386791), (67, 323288), (92, 235438), (134, 161644), (161, 134536), (184, 117719), (251, 86296), (268, 80822), (322, 67268), (469, 46184), (502, 43148), (536, 40411), (644, 33634), (938, 23092), (1004, 21574), (1288, 16817), (1541, 14056), (1757, 12328), (1876, 11546), (2008, 10787), (3082, 7028), (3514, 6164), (3752, 5773)]