255640840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:244

約数の個数: 192

約数和(自身を含む): 735436800

約数和(自身を除く): 479795960

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 79, 91, 98, 104, 127, 130, 140, 158, 182, 196, 245, 254, 260, 280, 316, 364, 392, 395, 455, 490, 508, 520, 553, 632, 635, 637, 728, 790, 889, 910, 980, 1016, 1027, 1106, 1270, 1274, 1580, 1651, 1778, 1820, 1960, 2054, 2212, 2540, 2548, 2765, 3160, 3185, 3302, 3556, 3640, 3871, 4108, 4424, 4445, 5080, 5096, 5135, 5530, 6223, 6370, 6604, 7112, 7189, 7742, 8216, 8255, 8890, 10033, 10270, 11060, 11557, 12446, 12740, 13208, 14378, 15484, 16510, 17780, 19355, 20066, 20540, 22120, 23114, 24892, 25480, 28756, 30968, 31115, 33020, 35560, 35945, 38710, 40132, 41080, 46228, 49784, 50165, 50323, 57512, 57785, 62230, 66040, 70231, 71890, 77420, 80264, 80899, 92456, 100330, 100646, 115570, 124460, 130429, 140462, 143780, 154840, 161798, 200660, 201292, 231140, 248920, 251615, 260858, 280924, 287560, 323596, 351155, 401320, 402584, 404495, 462280, 491617, 503230, 521716, 561848, 647192, 652145, 702310, 808990, 913003, 983234, 1006460, 1043432, 1304290, 1404620, 1617980, 1826006, 1966468, 2012920, 2458085, 2608580, 2809240, 3235960, 3652012, 3932936, 4565015, 4916170, 5217160, 6391021, 7304024, 9130030, 9832340, 12782042, 18260060, 19664680, 25564084, 31955105, 36520120, 51128168, 63910210, 127820420, 255640840]

約数ペア:

[(1, 255640840), (2, 127820420), (4, 63910210), (5, 51128168), (7, 36520120), (8, 31955105), (10, 25564084), (13, 19664680), (14, 18260060), (20, 12782042), (26, 9832340), (28, 9130030), (35, 7304024), (40, 6391021), (49, 5217160), (52, 4916170), (56, 4565015), (65, 3932936), (70, 3652012), (79, 3235960), (91, 2809240), (98, 2608580), (104, 2458085), (127, 2012920), (130, 1966468), (140, 1826006), (158, 1617980), (182, 1404620), (196, 1304290), (245, 1043432), (254, 1006460), (260, 983234), (280, 913003), (316, 808990), (364, 702310), (392, 652145), (395, 647192), (455, 561848), (490, 521716), (508, 503230), (520, 491617), (553, 462280), (632, 404495), (635, 402584), (637, 401320), (728, 351155), (790, 323596), (889, 287560), (910, 280924), (980, 260858), (1016, 251615), (1027, 248920), (1106, 231140), (1270, 201292), (1274, 200660), (1580, 161798), (1651, 154840), (1778, 143780), (1820, 140462), (1960, 130429), (2054, 124460), (2212, 115570), (2540, 100646), (2548, 100330), (2765, 92456), (3160, 80899), (3185, 80264), (3302, 77420), (3556, 71890), (3640, 70231), (3871, 66040), (4108, 62230), (4424, 57785), (4445, 57512), (5080, 50323), (5096, 50165), (5135, 49784), (5530, 46228), (6223, 41080), (6370, 40132), (6604, 38710), (7112, 35945), (7189, 35560), (7742, 33020), (8216, 31115), (8255, 30968), (8890, 28756), (10033, 25480), (10270, 24892), (11060, 23114), (11557, 22120), (12446, 20540), (12740, 20066), (13208, 19355), (14378, 17780), (15484, 16510)]