640790773441

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{307}}^1\times {\mathrm{2879}}^1$

素因数の和:3494

約数の個数: 64

約数和(自身を含む): 820221050880

約数和(自身を除く): 179430277439

約数列:

[1, 7, 13, 31, 91, 217, 257, 307, 403, 1799, 2149, 2821, 2879, 3341, 3991, 7967, 9517, 20153, 23387, 27937, 37427, 55769, 66619, 78899, 89249, 103571, 123721, 261989, 552293, 624743, 724997, 739903, 866047, 883853, 1025687, 1160237, 2445869, 5179321, 6186971, 7179809, 8121659, 9618739, 11490089, 17121083, 22936993, 27399443, 31796297, 67331173, 80430623, 160558951, 191796101, 222574079, 227150221, 298180909, 356192759, 1590051547, 2087266363, 2493349313, 2952952873, 7041656851, 20670670111, 49291597957, 91541539063, 640790773441]

約数ペア:

[(1, 640790773441), (7, 91541539063), (13, 49291597957), (31, 20670670111), (91, 7041656851), (217, 2952952873), (257, 2493349313), (307, 2087266363), (403, 1590051547), (1799, 356192759), (2149, 298180909), (2821, 227150221), (2879, 222574079), (3341, 191796101), (3991, 160558951), (7967, 80430623), (9517, 67331173), (20153, 31796297), (23387, 27399443), (27937, 22936993), (37427, 17121083), (55769, 11490089), (66619, 9618739), (78899, 8121659), (89249, 7179809), (103571, 6186971), (123721, 5179321), (261989, 2445869), (552293, 1160237), (624743, 1025687), (724997, 883853), (739903, 866047)]