19185760

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{991}}^1$

素因数の和:1028

約数の個数: 72

約数和(自身を含む): 49871808

約数和(自身を除く): 30686048

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 991, 1210, 1760, 1936, 1982, 2420, 3872, 3964, 4840, 4955, 7928, 9680, 9910, 10901, 15856, 19360, 19820, 21802, 31712, 39640, 43604, 54505, 79280, 87208, 109010, 119911, 158560, 174416, 218020, 239822, 348832, 436040, 479644, 599555, 872080, 959288, 1199110, 1744160, 1918576, 2398220, 3837152, 4796440, 9592880, 19185760]

約数ペア:

[(1, 19185760), (2, 9592880), (4, 4796440), (5, 3837152), (8, 2398220), (10, 1918576), (11, 1744160), (16, 1199110), (20, 959288), (22, 872080), (32, 599555), (40, 479644), (44, 436040), (55, 348832), (80, 239822), (88, 218020), (110, 174416), (121, 158560), (160, 119911), (176, 109010), (220, 87208), (242, 79280), (352, 54505), (440, 43604), (484, 39640), (605, 31712), (880, 21802), (968, 19820), (991, 19360), (1210, 15856), (1760, 10901), (1936, 9910), (1982, 9680), (2420, 7928), (3872, 4955), (3964, 4840)]