21455028

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4481}}^1$

素因数の和:4517

約数の個数: 72

約数和(自身を含む): 65257920

約数和(自身を除く): 43802892

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 42, 57, 63, 76, 84, 114, 126, 133, 171, 228, 252, 266, 342, 399, 532, 684, 798, 1197, 1596, 2394, 4481, 4788, 8962, 13443, 17924, 26886, 31367, 40329, 53772, 62734, 80658, 85139, 94101, 125468, 161316, 170278, 188202, 255417, 282303, 340556, 376404, 510834, 564606, 595973, 766251, 1021668, 1129212, 1191946, 1532502, 1787919, 2383892, 3065004, 3575838, 5363757, 7151676, 10727514, 21455028]

約数ペア:

[(1, 21455028), (2, 10727514), (3, 7151676), (4, 5363757), (6, 3575838), (7, 3065004), (9, 2383892), (12, 1787919), (14, 1532502), (18, 1191946), (19, 1129212), (21, 1021668), (28, 766251), (36, 595973), (38, 564606), (42, 510834), (57, 376404), (63, 340556), (76, 282303), (84, 255417), (114, 188202), (126, 170278), (133, 161316), (171, 125468), (228, 94101), (252, 85139), (266, 80658), (342, 62734), (399, 53772), (532, 40329), (684, 31367), (798, 26886), (1197, 17924), (1596, 13443), (2394, 8962), (4481, 4788)]