256539044255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{55661}}^1$

素因数の和:55836

約数の個数: 64

約数和(自身を含む): 362901990528

約数和(自身を除く): 106362946273

約数列:

[1, 5, 13, 17, 43, 65, 85, 97, 215, 221, 485, 559, 731, 1105, 1261, 1649, 2795, 3655, 4171, 6305, 8245, 9503, 20855, 21437, 47515, 54223, 55661, 70907, 107185, 271115, 278305, 354535, 723593, 921791, 946237, 2393423, 3617965, 4608955, 4731185, 5399117, 11967115, 12301081, 26995585, 31114499, 40688191, 61505405, 70188521, 91784989, 155572495, 203440955, 232162031, 350942605, 458924945, 528946483, 1160810155, 1193204857, 2644732415, 3018106403, 3946754527, 5966024285, 15090532015, 19733772635, 51307808851, 256539044255]

約数ペア:

[(1, 256539044255), (5, 51307808851), (13, 19733772635), (17, 15090532015), (43, 5966024285), (65, 3946754527), (85, 3018106403), (97, 2644732415), (215, 1193204857), (221, 1160810155), (485, 528946483), (559, 458924945), (731, 350942605), (1105, 232162031), (1261, 203440955), (1649, 155572495), (2795, 91784989), (3655, 70188521), (4171, 61505405), (6305, 40688191), (8245, 31114499), (9503, 26995585), (20855, 12301081), (21437, 11967115), (47515, 5399117), (54223, 4731185), (55661, 4608955), (70907, 3617965), (107185, 2393423), (271115, 946237), (278305, 921791), (354535, 723593)]