20474406

素因数分解:

$2^1\times 3^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:741

約数の個数: 48

約数和(自身を含む): 46715760

約数和(自身を除く): 26241354

約数列:

[1, 2, 3, 6, 9, 18, 29, 58, 61, 87, 122, 174, 183, 261, 366, 522, 549, 643, 1098, 1286, 1769, 1929, 3538, 3858, 5307, 5787, 10614, 11574, 15921, 18647, 31842, 37294, 39223, 55941, 78446, 111882, 117669, 167823, 235338, 335646, 353007, 706014, 1137467, 2274934, 3412401, 6824802, 10237203, 20474406]

約数ペア:

[(1, 20474406), (2, 10237203), (3, 6824802), (6, 3412401), (9, 2274934), (18, 1137467), (29, 706014), (58, 353007), (61, 335646), (87, 235338), (122, 167823), (174, 117669), (183, 111882), (261, 78446), (366, 55941), (522, 39223), (549, 37294), (643, 31842), (1098, 18647), (1286, 15921), (1769, 11574), (1929, 10614), (3538, 5787), (3858, 5307)]