21170644

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 45045504

約数和(自身を除く): 23874860

約数列:

[1, 2, 4, 11, 17, 22, 31, 34, 44, 62, 68, 83, 121, 124, 166, 187, 242, 332, 341, 374, 484, 527, 682, 748, 913, 1054, 1364, 1411, 1826, 2057, 2108, 2573, 2822, 3652, 3751, 4114, 5146, 5644, 5797, 7502, 8228, 10043, 10292, 11594, 15004, 15521, 20086, 23188, 28303, 31042, 40172, 43741, 56606, 62084, 63767, 87482, 113212, 127534, 170731, 174964, 255068, 311333, 341462, 481151, 622666, 682924, 962302, 1245332, 1924604, 5292661, 10585322, 21170644]

約数ペア:

[(1, 21170644), (2, 10585322), (4, 5292661), (11, 1924604), (17, 1245332), (22, 962302), (31, 682924), (34, 622666), (44, 481151), (62, 341462), (68, 311333), (83, 255068), (121, 174964), (124, 170731), (166, 127534), (187, 113212), (242, 87482), (332, 63767), (341, 62084), (374, 56606), (484, 43741), (527, 40172), (682, 31042), (748, 28303), (913, 23188), (1054, 20086), (1364, 15521), (1411, 15004), (1826, 11594), (2057, 10292), (2108, 10043), (2573, 8228), (2822, 7502), (3652, 5797), (3751, 5644), (4114, 5146)]