18988235

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 28957824

約数和(自身を除く): 9969589

約数列:

[1, 5, 7, 17, 35, 47, 49, 85, 97, 119, 235, 245, 329, 485, 595, 679, 799, 833, 1645, 1649, 2303, 3395, 3995, 4165, 4559, 4753, 5593, 8245, 11515, 11543, 22795, 23765, 27965, 31913, 39151, 57715, 77503, 80801, 159565, 195755, 223391, 387515, 404005, 542521, 1116955, 2712605, 3797647, 18988235]

約数ペア:

[(1, 18988235), (5, 3797647), (7, 2712605), (17, 1116955), (35, 542521), (47, 404005), (49, 387515), (85, 223391), (97, 195755), (119, 159565), (235, 80801), (245, 77503), (329, 57715), (485, 39151), (595, 31913), (679, 27965), (799, 23765), (833, 22795), (1645, 11543), (1649, 11515), (2303, 8245), (3395, 5593), (3995, 4753), (4165, 4559)]