21275212

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:263

約数の個数: 72

約数和(自身を含む): 47401200

約数和(自身を除く): 26125988

約数列:

[1, 2, 4, 7, 14, 19, 28, 29, 38, 49, 58, 76, 98, 116, 133, 196, 197, 203, 266, 394, 406, 532, 551, 788, 812, 931, 1102, 1379, 1421, 1862, 2204, 2758, 2842, 3724, 3743, 3857, 5516, 5684, 5713, 7486, 7714, 9653, 11426, 14972, 15428, 19306, 22852, 26201, 26999, 38612, 39991, 52402, 53998, 79982, 104804, 107996, 108547, 159964, 183407, 217094, 279937, 366814, 434188, 559874, 733628, 759829, 1119748, 1519658, 3039316, 5318803, 10637606, 21275212]

約数ペア:

[(1, 21275212), (2, 10637606), (4, 5318803), (7, 3039316), (14, 1519658), (19, 1119748), (28, 759829), (29, 733628), (38, 559874), (49, 434188), (58, 366814), (76, 279937), (98, 217094), (116, 183407), (133, 159964), (196, 108547), (197, 107996), (203, 104804), (266, 79982), (394, 53998), (406, 52402), (532, 39991), (551, 38612), (788, 26999), (812, 26201), (931, 22852), (1102, 19306), (1379, 15428), (1421, 14972), (1862, 11426), (2204, 9653), (2758, 7714), (2842, 7486), (3724, 5713), (3743, 5684), (3857, 5516)]