21307605

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:182

約数の個数: 64

約数和(自身を含む): 39640320

約数和(自身を除く): 18332715

約数列:

[1, 3, 5, 11, 15, 29, 33, 55, 61, 73, 87, 145, 165, 183, 219, 305, 319, 365, 435, 671, 803, 915, 957, 1095, 1595, 1769, 2013, 2117, 2409, 3355, 4015, 4453, 4785, 5307, 6351, 8845, 10065, 10585, 12045, 13359, 19459, 22265, 23287, 26535, 31755, 48983, 58377, 66795, 69861, 97295, 116435, 129137, 146949, 244915, 291885, 349305, 387411, 645685, 734745, 1420507, 1937055, 4261521, 7102535, 21307605]

約数ペア:

[(1, 21307605), (3, 7102535), (5, 4261521), (11, 1937055), (15, 1420507), (29, 734745), (33, 645685), (55, 387411), (61, 349305), (73, 291885), (87, 244915), (145, 146949), (165, 129137), (183, 116435), (219, 97295), (305, 69861), (319, 66795), (365, 58377), (435, 48983), (671, 31755), (803, 26535), (915, 23287), (957, 22265), (1095, 19459), (1595, 13359), (1769, 12045), (2013, 10585), (2117, 10065), (2409, 8845), (3355, 6351), (4015, 5307), (4453, 4785)]