21078816

素因数分解:

$2^5\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19961}}^1$

素因数の和:19985

約数の個数: 48

約数和(自身を含む): 60365088

約数和(自身を除く): 39286272

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 32, 33, 44, 48, 66, 88, 96, 132, 176, 264, 352, 528, 1056, 19961, 39922, 59883, 79844, 119766, 159688, 219571, 239532, 319376, 439142, 479064, 638752, 658713, 878284, 958128, 1317426, 1756568, 1916256, 2634852, 3513136, 5269704, 7026272, 10539408, 21078816]

約数ペア:

[(1, 21078816), (2, 10539408), (3, 7026272), (4, 5269704), (6, 3513136), (8, 2634852), (11, 1916256), (12, 1756568), (16, 1317426), (22, 958128), (24, 878284), (32, 658713), (33, 638752), (44, 479064), (48, 439142), (66, 319376), (88, 239532), (96, 219571), (132, 159688), (176, 119766), (264, 79844), (352, 59883), (528, 39922), (1056, 19961)]