261147880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{661}}^1$

素因数の和:779

約数の個数: 128

約数和(自身を含む): 720679680

約数和(自身を除く): 459531800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 83, 85, 119, 136, 140, 166, 170, 238, 280, 332, 340, 415, 476, 581, 595, 661, 664, 680, 830, 952, 1162, 1190, 1322, 1411, 1660, 2324, 2380, 2644, 2822, 2905, 3305, 3320, 4627, 4648, 4760, 5288, 5644, 5810, 6610, 7055, 9254, 9877, 11237, 11288, 11620, 13220, 14110, 18508, 19754, 22474, 23135, 23240, 26440, 28220, 37016, 39508, 44948, 46270, 49385, 54863, 56185, 56440, 78659, 79016, 89896, 92540, 98770, 109726, 112370, 157318, 185080, 197540, 219452, 224740, 274315, 314636, 384041, 393295, 395080, 438904, 449480, 548630, 629272, 768082, 786590, 932671, 1097260, 1536164, 1573180, 1865342, 1920205, 2194520, 3072328, 3146360, 3730684, 3840410, 4663355, 6528697, 7461368, 7680820, 9326710, 13057394, 15361640, 18653420, 26114788, 32643485, 37306840, 52229576, 65286970, 130573940, 261147880]

約数ペア:

[(1, 261147880), (2, 130573940), (4, 65286970), (5, 52229576), (7, 37306840), (8, 32643485), (10, 26114788), (14, 18653420), (17, 15361640), (20, 13057394), (28, 9326710), (34, 7680820), (35, 7461368), (40, 6528697), (56, 4663355), (68, 3840410), (70, 3730684), (83, 3146360), (85, 3072328), (119, 2194520), (136, 1920205), (140, 1865342), (166, 1573180), (170, 1536164), (238, 1097260), (280, 932671), (332, 786590), (340, 768082), (415, 629272), (476, 548630), (581, 449480), (595, 438904), (661, 395080), (664, 393295), (680, 384041), (830, 314636), (952, 274315), (1162, 224740), (1190, 219452), (1322, 197540), (1411, 185080), (1660, 157318), (2324, 112370), (2380, 109726), (2644, 98770), (2822, 92540), (2905, 89896), (3305, 79016), (3320, 78659), (4627, 56440), (4648, 56185), (4760, 54863), (5288, 49385), (5644, 46270), (5810, 44948), (6610, 39508), (7055, 37016), (9254, 28220), (9877, 26440), (11237, 23240), (11288, 23135), (11620, 22474), (13220, 19754), (14110, 18508)]