263015005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:442

約数の個数: 64

約数和(自身を含む): 391495680

約数和(自身を除く): 128480675

約数列:

[1, 5, 11, 19, 23, 31, 55, 95, 115, 155, 209, 253, 341, 353, 437, 589, 713, 1045, 1265, 1705, 1765, 2185, 2945, 3565, 3883, 4807, 6479, 6707, 7843, 8119, 10943, 13547, 19415, 24035, 32395, 33535, 39215, 40595, 54715, 67735, 73777, 89309, 120373, 149017, 154261, 207917, 251689, 368885, 446545, 601865, 745085, 771305, 1039585, 1258445, 1696871, 2287087, 2768579, 4782091, 8484355, 11435435, 13842895, 23910455, 52603001, 263015005]

約数ペア:

[(1, 263015005), (5, 52603001), (11, 23910455), (19, 13842895), (23, 11435435), (31, 8484355), (55, 4782091), (95, 2768579), (115, 2287087), (155, 1696871), (209, 1258445), (253, 1039585), (341, 771305), (353, 745085), (437, 601865), (589, 446545), (713, 368885), (1045, 251689), (1265, 207917), (1705, 154261), (1765, 149017), (2185, 120373), (2945, 89309), (3565, 73777), (3883, 67735), (4807, 54715), (6479, 40595), (6707, 39215), (7843, 33535), (8119, 32395), (10943, 24035), (13547, 19415)]