21920052

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{3389}}^1$

素因数の和:3421

約数の個数: 72

約数和(自身を含む): 64925280

約数和(自身を除く): 43005228

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 44, 49, 66, 77, 84, 98, 132, 147, 154, 196, 231, 294, 308, 462, 539, 588, 924, 1078, 1617, 2156, 3234, 3389, 6468, 6778, 10167, 13556, 20334, 23723, 37279, 40668, 47446, 71169, 74558, 94892, 111837, 142338, 149116, 166061, 223674, 260953, 284676, 332122, 447348, 498183, 521906, 664244, 782859, 996366, 1043812, 1565718, 1826671, 1992732, 3131436, 3653342, 5480013, 7306684, 10960026, 21920052]

約数ペア:

[(1, 21920052), (2, 10960026), (3, 7306684), (4, 5480013), (6, 3653342), (7, 3131436), (11, 1992732), (12, 1826671), (14, 1565718), (21, 1043812), (22, 996366), (28, 782859), (33, 664244), (42, 521906), (44, 498183), (49, 447348), (66, 332122), (77, 284676), (84, 260953), (98, 223674), (132, 166061), (147, 149116), (154, 142338), (196, 111837), (231, 94892), (294, 74558), (308, 71169), (462, 47446), (539, 40668), (588, 37279), (924, 23723), (1078, 20334), (1617, 13556), (2156, 10167), (3234, 6778), (3389, 6468)]