127978974890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{257239}}^1$

素因数の和:257391

約数の個数: 64

約数和(自身を含む): 256704940800

約数和(自身を除く): 128725965910

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 89, 130, 178, 215, 430, 445, 559, 890, 1118, 1157, 2314, 2795, 3827, 5590, 5785, 7654, 11570, 19135, 38270, 49751, 99502, 248755, 257239, 497510, 514478, 1286195, 2572390, 3344107, 6688214, 11061277, 16720535, 22122554, 22894271, 33441070, 45788542, 55306385, 110612770, 114471355, 143796601, 228942710, 287593202, 297625523, 595251046, 718983005, 984453653, 1437966010, 1488127615, 1968907306, 2976255230, 4922268265, 9844536530, 12797897489, 25595794978, 63989487445, 127978974890]

約数ペア:

[(1, 127978974890), (2, 63989487445), (5, 25595794978), (10, 12797897489), (13, 9844536530), (26, 4922268265), (43, 2976255230), (65, 1968907306), (86, 1488127615), (89, 1437966010), (130, 984453653), (178, 718983005), (215, 595251046), (430, 297625523), (445, 287593202), (559, 228942710), (890, 143796601), (1118, 114471355), (1157, 110612770), (2314, 55306385), (2795, 45788542), (3827, 33441070), (5590, 22894271), (5785, 22122554), (7654, 16720535), (11570, 11061277), (19135, 6688214), (38270, 3344107), (49751, 2572390), (99502, 1286195), (248755, 514478), (257239, 497510)]