263328520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{991}}^1$

素因数の和:1095

約数の個数: 128

約数和(自身を含む): 739952640

約数和(自身を除く): 476624120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 73, 91, 104, 130, 140, 146, 182, 260, 280, 292, 364, 365, 455, 511, 520, 584, 728, 730, 910, 949, 991, 1022, 1460, 1820, 1898, 1982, 2044, 2555, 2920, 3640, 3796, 3964, 4088, 4745, 4955, 5110, 6643, 6937, 7592, 7928, 9490, 9910, 10220, 12883, 13286, 13874, 18980, 19820, 20440, 25766, 26572, 27748, 33215, 34685, 37960, 39640, 51532, 53144, 55496, 64415, 66430, 69370, 72343, 90181, 103064, 128830, 132860, 138740, 144686, 180362, 257660, 265720, 277480, 289372, 360724, 361715, 450905, 506401, 515320, 578744, 721448, 723430, 901810, 940459, 1012802, 1446860, 1803620, 1880918, 2025604, 2532005, 2893720, 3607240, 3761836, 4051208, 4702295, 5064010, 6583213, 7523672, 9404590, 10128020, 13166426, 18809180, 20256040, 26332852, 32916065, 37618360, 52665704, 65832130, 131664260, 263328520]

約数ペア:

[(1, 263328520), (2, 131664260), (4, 65832130), (5, 52665704), (7, 37618360), (8, 32916065), (10, 26332852), (13, 20256040), (14, 18809180), (20, 13166426), (26, 10128020), (28, 9404590), (35, 7523672), (40, 6583213), (52, 5064010), (56, 4702295), (65, 4051208), (70, 3761836), (73, 3607240), (91, 2893720), (104, 2532005), (130, 2025604), (140, 1880918), (146, 1803620), (182, 1446860), (260, 1012802), (280, 940459), (292, 901810), (364, 723430), (365, 721448), (455, 578744), (511, 515320), (520, 506401), (584, 450905), (728, 361715), (730, 360724), (910, 289372), (949, 277480), (991, 265720), (1022, 257660), (1460, 180362), (1820, 144686), (1898, 138740), (1982, 132860), (2044, 128830), (2555, 103064), (2920, 90181), (3640, 72343), (3796, 69370), (3964, 66430), (4088, 64415), (4745, 55496), (4955, 53144), (5110, 51532), (6643, 39640), (6937, 37960), (7592, 34685), (7928, 33215), (9490, 27748), (9910, 26572), (10220, 25766), (12883, 20440), (13286, 19820), (13874, 18980)]