21172305

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{797}}^1$

素因数の和:846

約数の個数: 64

約数和(自身を含む): 44126208

約数和(自身を除く): 22953903

約数列:

[1, 3, 5, 7, 11, 15, 21, 23, 33, 35, 55, 69, 77, 105, 115, 161, 165, 231, 253, 345, 385, 483, 759, 797, 805, 1155, 1265, 1771, 2391, 2415, 3795, 3985, 5313, 5579, 8767, 8855, 11955, 16737, 18331, 26301, 26565, 27895, 43835, 54993, 61369, 83685, 91655, 128317, 131505, 184107, 201641, 274965, 306845, 384951, 604923, 641585, 920535, 1008205, 1411487, 1924755, 3024615, 4234461, 7057435, 21172305]

約数ペア:

[(1, 21172305), (3, 7057435), (5, 4234461), (7, 3024615), (11, 1924755), (15, 1411487), (21, 1008205), (23, 920535), (33, 641585), (35, 604923), (55, 384951), (69, 306845), (77, 274965), (105, 201641), (115, 184107), (161, 131505), (165, 128317), (231, 91655), (253, 83685), (345, 61369), (385, 54993), (483, 43835), (759, 27895), (797, 26565), (805, 26301), (1155, 18331), (1265, 16737), (1771, 11955), (2391, 8855), (2415, 8767), (3795, 5579), (3985, 5313)]