21172690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{887}}^1$

素因数の和:943

約数の個数: 64

約数和(自身を含む): 49102848

約数和(自身を除く): 27930158

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 31, 35, 55, 62, 70, 77, 110, 154, 155, 217, 310, 341, 385, 434, 682, 770, 887, 1085, 1705, 1774, 2170, 2387, 3410, 4435, 4774, 6209, 8870, 9757, 11935, 12418, 19514, 23870, 27497, 31045, 48785, 54994, 62090, 68299, 97570, 136598, 137485, 192479, 274970, 302467, 341495, 384958, 604934, 682990, 962395, 1512335, 1924790, 2117269, 3024670, 4234538, 10586345, 21172690]

約数ペア:

[(1, 21172690), (2, 10586345), (5, 4234538), (7, 3024670), (10, 2117269), (11, 1924790), (14, 1512335), (22, 962395), (31, 682990), (35, 604934), (55, 384958), (62, 341495), (70, 302467), (77, 274970), (110, 192479), (154, 137485), (155, 136598), (217, 97570), (310, 68299), (341, 62090), (385, 54994), (434, 48785), (682, 31045), (770, 27497), (887, 23870), (1085, 19514), (1705, 12418), (1774, 11935), (2170, 9757), (2387, 8870), (3410, 6209), (4435, 4774)]