256978260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18541}}^1$

素因数の和:18574

約数の個数: 144

約数和(自身を含む): 971897472

約数和(自身を除く): 714919212

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 110, 126, 132, 140, 154, 165, 180, 198, 210, 220, 231, 252, 308, 315, 330, 385, 396, 420, 462, 495, 630, 660, 693, 770, 924, 990, 1155, 1260, 1386, 1540, 1980, 2310, 2772, 3465, 4620, 6930, 13860, 18541, 37082, 55623, 74164, 92705, 111246, 129787, 166869, 185410, 203951, 222492, 259574, 278115, 333738, 370820, 389361, 407902, 519148, 556230, 611853, 648935, 667476, 778722, 815804, 834345, 1019755, 1112460, 1168083, 1223706, 1297870, 1427657, 1557444, 1668690, 1835559, 1946805, 2039510, 2336166, 2447412, 2595740, 2855314, 3059265, 3337380, 3671118, 3893610, 4079020, 4282971, 4672332, 5710628, 5840415, 6118530, 7138285, 7342236, 7787220, 8565942, 9177795, 11680830, 12237060, 12848913, 14276570, 17131884, 18355590, 21414855, 23361660, 25697826, 28553140, 36711180, 42829710, 51395652, 64244565, 85659420, 128489130, 256978260]

約数ペア:

[(1, 256978260), (2, 128489130), (3, 85659420), (4, 64244565), (5, 51395652), (6, 42829710), (7, 36711180), (9, 28553140), (10, 25697826), (11, 23361660), (12, 21414855), (14, 18355590), (15, 17131884), (18, 14276570), (20, 12848913), (21, 12237060), (22, 11680830), (28, 9177795), (30, 8565942), (33, 7787220), (35, 7342236), (36, 7138285), (42, 6118530), (44, 5840415), (45, 5710628), (55, 4672332), (60, 4282971), (63, 4079020), (66, 3893610), (70, 3671118), (77, 3337380), (84, 3059265), (90, 2855314), (99, 2595740), (105, 2447412), (110, 2336166), (126, 2039510), (132, 1946805), (140, 1835559), (154, 1668690), (165, 1557444), (180, 1427657), (198, 1297870), (210, 1223706), (220, 1168083), (231, 1112460), (252, 1019755), (308, 834345), (315, 815804), (330, 778722), (385, 667476), (396, 648935), (420, 611853), (462, 556230), (495, 519148), (630, 407902), (660, 389361), (693, 370820), (770, 333738), (924, 278115), (990, 259574), (1155, 222492), (1260, 203951), (1386, 185410), (1540, 166869), (1980, 129787), (2310, 111246), (2772, 92705), (3465, 74164), (4620, 55623), (6930, 37082), (13860, 18541)]