255815560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6389}}^1$

素因数の和:6431

約数の個数: 128

約数和(自身を含む): 772934400

約数和(自身を除く): 517118840

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 88, 91, 104, 110, 130, 140, 143, 154, 182, 220, 260, 280, 286, 308, 364, 385, 440, 455, 520, 572, 616, 715, 728, 770, 910, 1001, 1144, 1430, 1540, 1820, 2002, 2860, 3080, 3640, 4004, 5005, 5720, 6389, 8008, 10010, 12778, 20020, 25556, 31945, 40040, 44723, 51112, 63890, 70279, 83057, 89446, 127780, 140558, 166114, 178892, 223615, 255560, 281116, 332228, 351395, 357784, 415285, 447230, 491953, 562232, 581399, 664456, 702790, 830570, 894460, 913627, 983906, 1162798, 1405580, 1661140, 1788920, 1827254, 1967812, 2325596, 2459765, 2811160, 2906995, 3322280, 3654508, 3935624, 4568135, 4651192, 4919530, 5813990, 6395389, 7309016, 9136270, 9839060, 11627980, 12790778, 18272540, 19678120, 23255960, 25581556, 31976945, 36545080, 51163112, 63953890, 127907780, 255815560]

約数ペア:

[(1, 255815560), (2, 127907780), (4, 63953890), (5, 51163112), (7, 36545080), (8, 31976945), (10, 25581556), (11, 23255960), (13, 19678120), (14, 18272540), (20, 12790778), (22, 11627980), (26, 9839060), (28, 9136270), (35, 7309016), (40, 6395389), (44, 5813990), (52, 4919530), (55, 4651192), (56, 4568135), (65, 3935624), (70, 3654508), (77, 3322280), (88, 2906995), (91, 2811160), (104, 2459765), (110, 2325596), (130, 1967812), (140, 1827254), (143, 1788920), (154, 1661140), (182, 1405580), (220, 1162798), (260, 983906), (280, 913627), (286, 894460), (308, 830570), (364, 702790), (385, 664456), (440, 581399), (455, 562232), (520, 491953), (572, 447230), (616, 415285), (715, 357784), (728, 351395), (770, 332228), (910, 281116), (1001, 255560), (1144, 223615), (1430, 178892), (1540, 166114), (1820, 140558), (2002, 127780), (2860, 89446), (3080, 83057), (3640, 70279), (4004, 63890), (5005, 51112), (5720, 44723), (6389, 40040), (8008, 31945), (10010, 25556), (12778, 20020)]