257881320

素因数分解:

$2^3\times 3^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{617}}^1$

素因数の和:686

約数の個数: 192

約数和(自身を含む): 890809920

約数和(自身を除く): 632928600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 43, 45, 54, 60, 72, 81, 86, 90, 108, 120, 129, 135, 162, 172, 180, 215, 216, 243, 258, 270, 324, 344, 360, 387, 405, 430, 486, 516, 540, 617, 645, 648, 774, 810, 860, 972, 1032, 1080, 1161, 1215, 1234, 1290, 1548, 1620, 1720, 1851, 1935, 1944, 2322, 2430, 2468, 2580, 3085, 3096, 3240, 3483, 3702, 3870, 4644, 4860, 4936, 5160, 5553, 5805, 6170, 6966, 7404, 7740, 9255, 9288, 9720, 10449, 11106, 11610, 12340, 13932, 14808, 15480, 16659, 17415, 18510, 20898, 22212, 23220, 24680, 26531, 27765, 27864, 33318, 34830, 37020, 41796, 44424, 46440, 49977, 52245, 53062, 55530, 66636, 69660, 74040, 79593, 83295, 83592, 99954, 104490, 106124, 111060, 132655, 133272, 139320, 149931, 159186, 166590, 199908, 208980, 212248, 222120, 238779, 249885, 265310, 299862, 318372, 333180, 397965, 399816, 417960, 477558, 499770, 530620, 599724, 636744, 666360, 716337, 749655, 795930, 955116, 999540, 1061240, 1193895, 1199448, 1432674, 1499310, 1591860, 1910232, 1999080, 2149011, 2387790, 2865348, 2998620, 3183720, 3581685, 4298022, 4775580, 5730696, 5997240, 6447033, 7163370, 8596044, 9551160, 10745055, 12894066, 14326740, 17192088, 21490110, 25788132, 28653480, 32235165, 42980220, 51576264, 64470330, 85960440, 128940660, 257881320]

約数ペア:

[(1, 257881320), (2, 128940660), (3, 85960440), (4, 64470330), (5, 51576264), (6, 42980220), (8, 32235165), (9, 28653480), (10, 25788132), (12, 21490110), (15, 17192088), (18, 14326740), (20, 12894066), (24, 10745055), (27, 9551160), (30, 8596044), (36, 7163370), (40, 6447033), (43, 5997240), (45, 5730696), (54, 4775580), (60, 4298022), (72, 3581685), (81, 3183720), (86, 2998620), (90, 2865348), (108, 2387790), (120, 2149011), (129, 1999080), (135, 1910232), (162, 1591860), (172, 1499310), (180, 1432674), (215, 1199448), (216, 1193895), (243, 1061240), (258, 999540), (270, 955116), (324, 795930), (344, 749655), (360, 716337), (387, 666360), (405, 636744), (430, 599724), (486, 530620), (516, 499770), (540, 477558), (617, 417960), (645, 399816), (648, 397965), (774, 333180), (810, 318372), (860, 299862), (972, 265310), (1032, 249885), (1080, 238779), (1161, 222120), (1215, 212248), (1234, 208980), (1290, 199908), (1548, 166590), (1620, 159186), (1720, 149931), (1851, 139320), (1935, 133272), (1944, 132655), (2322, 111060), (2430, 106124), (2468, 104490), (2580, 99954), (3085, 83592), (3096, 83295), (3240, 79593), (3483, 74040), (3702, 69660), (3870, 66636), (4644, 55530), (4860, 53062), (4936, 52245), (5160, 49977), (5553, 46440), (5805, 44424), (6170, 41796), (6966, 37020), (7404, 34830), (7740, 33318), (9255, 27864), (9288, 27765), (9720, 26531), (10449, 24680), (11106, 23220), (11610, 22212), (12340, 20898), (13932, 18510), (14808, 17415), (15480, 16659)]