990448515

素因数分解:

$3^2\times 5^1\times 7^4\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:231

約数の個数: 120

約数和(自身を含む): 2044954080

約数和(自身を除く): 1054505565

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 89, 103, 105, 147, 245, 267, 309, 315, 343, 441, 445, 515, 623, 721, 735, 801, 927, 1029, 1335, 1545, 1715, 1869, 2163, 2205, 2401, 3087, 3115, 3605, 4005, 4361, 4635, 5047, 5145, 5607, 6489, 7203, 9167, 9345, 10815, 12005, 13083, 15141, 15435, 21609, 21805, 25235, 27501, 28035, 30527, 32445, 35329, 36015, 39249, 45423, 45835, 64169, 65415, 75705, 82503, 91581, 105987, 108045, 137505, 152635, 176645, 192507, 196245, 213689, 227115, 247303, 274743, 317961, 320845, 412515, 449183, 457905, 529935, 577521, 641067, 741909, 962535, 1068445, 1236515, 1347549, 1373715, 1589805, 1923201, 2225727, 2245915, 2887605, 3144281, 3205335, 3709545, 4042647, 6737745, 9432843, 9616005, 11128635, 15721405, 20213235, 22009967, 28298529, 47164215, 66029901, 110049835, 141492645, 198089703, 330149505, 990448515]

約数ペア:

[(1, 990448515), (3, 330149505), (5, 198089703), (7, 141492645), (9, 110049835), (15, 66029901), (21, 47164215), (35, 28298529), (45, 22009967), (49, 20213235), (63, 15721405), (89, 11128635), (103, 9616005), (105, 9432843), (147, 6737745), (245, 4042647), (267, 3709545), (309, 3205335), (315, 3144281), (343, 2887605), (441, 2245915), (445, 2225727), (515, 1923201), (623, 1589805), (721, 1373715), (735, 1347549), (801, 1236515), (927, 1068445), (1029, 962535), (1335, 741909), (1545, 641067), (1715, 577521), (1869, 529935), (2163, 457905), (2205, 449183), (2401, 412515), (3087, 320845), (3115, 317961), (3605, 274743), (4005, 247303), (4361, 227115), (4635, 213689), (5047, 196245), (5145, 192507), (5607, 176645), (6489, 152635), (7203, 137505), (9167, 108045), (9345, 105987), (10815, 91581), (12005, 82503), (13083, 75705), (15141, 65415), (15435, 64169), (21609, 45835), (21805, 45423), (25235, 39249), (27501, 36015), (28035, 35329), (30527, 32445)]