21889780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:169

約数の個数: 96

約数和(自身を含む): 53706240

約数和(自身を除く): 31816460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 47, 55, 58, 73, 94, 110, 116, 145, 146, 188, 220, 235, 290, 292, 319, 365, 470, 517, 580, 638, 730, 803, 940, 1034, 1276, 1363, 1460, 1595, 1606, 2068, 2117, 2585, 2726, 3190, 3212, 3431, 4015, 4234, 5170, 5452, 6380, 6815, 6862, 8030, 8468, 10340, 10585, 13630, 13724, 14993, 16060, 17155, 21170, 23287, 27260, 29986, 34310, 37741, 42340, 46574, 59972, 68620, 74965, 75482, 93148, 99499, 116435, 149930, 150964, 188705, 198998, 232870, 299860, 377410, 397996, 465740, 497495, 754820, 994990, 1094489, 1989980, 2188978, 4377956, 5472445, 10944890, 21889780]

約数ペア:

[(1, 21889780), (2, 10944890), (4, 5472445), (5, 4377956), (10, 2188978), (11, 1989980), (20, 1094489), (22, 994990), (29, 754820), (44, 497495), (47, 465740), (55, 397996), (58, 377410), (73, 299860), (94, 232870), (110, 198998), (116, 188705), (145, 150964), (146, 149930), (188, 116435), (220, 99499), (235, 93148), (290, 75482), (292, 74965), (319, 68620), (365, 59972), (470, 46574), (517, 42340), (580, 37741), (638, 34310), (730, 29986), (803, 27260), (940, 23287), (1034, 21170), (1276, 17155), (1363, 16060), (1460, 14993), (1595, 13724), (1606, 13630), (2068, 10585), (2117, 10340), (2585, 8468), (2726, 8030), (3190, 6862), (3212, 6815), (3431, 6380), (4015, 5452), (4234, 5170)]