21579894

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{569}}^1$

素因数の和:634

約数の個数: 72

約数和(自身を含む): 55752840

約数和(自身を除く): 34172946

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 43, 49, 63, 86, 98, 126, 129, 147, 258, 294, 301, 387, 441, 569, 602, 774, 882, 903, 1138, 1707, 1806, 2107, 2709, 3414, 3983, 4214, 5121, 5418, 6321, 7966, 10242, 11949, 12642, 18963, 23898, 24467, 27881, 35847, 37926, 48934, 55762, 71694, 73401, 83643, 146802, 167286, 171269, 220203, 250929, 342538, 440406, 501858, 513807, 1027614, 1198883, 1541421, 2397766, 3082842, 3596649, 7193298, 10789947, 21579894]

約数ペア:

[(1, 21579894), (2, 10789947), (3, 7193298), (6, 3596649), (7, 3082842), (9, 2397766), (14, 1541421), (18, 1198883), (21, 1027614), (42, 513807), (43, 501858), (49, 440406), (63, 342538), (86, 250929), (98, 220203), (126, 171269), (129, 167286), (147, 146802), (258, 83643), (294, 73401), (301, 71694), (387, 55762), (441, 48934), (569, 37926), (602, 35847), (774, 27881), (882, 24467), (903, 23898), (1138, 18963), (1707, 12642), (1806, 11949), (2107, 10242), (2709, 7966), (3414, 6321), (3983, 5418), (4214, 5121)]