255436280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:421

約数の個数: 128

約数和(自身を含む): 659957760

約数和(自身を除く): 404521480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 61, 62, 88, 110, 122, 124, 155, 220, 244, 248, 305, 307, 310, 341, 440, 488, 610, 614, 620, 671, 682, 1220, 1228, 1240, 1342, 1364, 1535, 1705, 1891, 2440, 2456, 2684, 2728, 3070, 3355, 3377, 3410, 3782, 5368, 6140, 6710, 6754, 6820, 7564, 9455, 9517, 12280, 13420, 13508, 13640, 15128, 16885, 18727, 18910, 19034, 20801, 26840, 27016, 33770, 37454, 37820, 38068, 41602, 47585, 67540, 74908, 75640, 76136, 83204, 93635, 95170, 104005, 104687, 135080, 149816, 166408, 187270, 190340, 205997, 208010, 209374, 374540, 380680, 411994, 416020, 418748, 523435, 580537, 749080, 823988, 832040, 837496, 1029985, 1046870, 1161074, 1647976, 2059970, 2093740, 2322148, 2902685, 4119940, 4187480, 4644296, 5805370, 6385907, 8239880, 11610740, 12771814, 23221480, 25543628, 31929535, 51087256, 63859070, 127718140, 255436280]

約数ペア:

[(1, 255436280), (2, 127718140), (4, 63859070), (5, 51087256), (8, 31929535), (10, 25543628), (11, 23221480), (20, 12771814), (22, 11610740), (31, 8239880), (40, 6385907), (44, 5805370), (55, 4644296), (61, 4187480), (62, 4119940), (88, 2902685), (110, 2322148), (122, 2093740), (124, 2059970), (155, 1647976), (220, 1161074), (244, 1046870), (248, 1029985), (305, 837496), (307, 832040), (310, 823988), (341, 749080), (440, 580537), (488, 523435), (610, 418748), (614, 416020), (620, 411994), (671, 380680), (682, 374540), (1220, 209374), (1228, 208010), (1240, 205997), (1342, 190340), (1364, 187270), (1535, 166408), (1705, 149816), (1891, 135080), (2440, 104687), (2456, 104005), (2684, 95170), (2728, 93635), (3070, 83204), (3355, 76136), (3377, 75640), (3410, 74908), (3782, 67540), (5368, 47585), (6140, 41602), (6710, 38068), (6754, 37820), (6820, 37454), (7564, 33770), (9455, 27016), (9517, 26840), (12280, 20801), (13420, 19034), (13508, 18910), (13640, 18727), (15128, 16885)]