257253360

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11779}}^1$

素因数の和:11815

約数の個数: 160

約数和(自身を含む): 981603840

約数和(自身を除く): 724350480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 910, 1040, 1092, 1365, 1456, 1560, 1680, 1820, 2184, 2730, 3120, 3640, 4368, 5460, 7280, 10920, 11779, 21840, 23558, 35337, 47116, 58895, 70674, 82453, 94232, 117790, 141348, 153127, 164906, 176685, 188464, 235580, 247359, 282696, 306254, 329812, 353370, 412265, 459381, 471160, 494718, 565392, 612508, 659624, 706740, 765635, 824530, 918762, 942320, 989436, 1071889, 1225016, 1236795, 1319248, 1413480, 1531270, 1649060, 1837524, 1978872, 2143778, 2296905, 2450032, 2473590, 2826960, 3062540, 3215667, 3298120, 3675048, 3957744, 4287556, 4593810, 4947180, 5359445, 6125080, 6431334, 6596240, 7350096, 8575112, 9187620, 9894360, 10718890, 12250160, 12862668, 16078335, 17150224, 18375240, 19788720, 21437780, 25725336, 32156670, 36750480, 42875560, 51450672, 64313340, 85751120, 128626680, 257253360]

約数ペア:

[(1, 257253360), (2, 128626680), (3, 85751120), (4, 64313340), (5, 51450672), (6, 42875560), (7, 36750480), (8, 32156670), (10, 25725336), (12, 21437780), (13, 19788720), (14, 18375240), (15, 17150224), (16, 16078335), (20, 12862668), (21, 12250160), (24, 10718890), (26, 9894360), (28, 9187620), (30, 8575112), (35, 7350096), (39, 6596240), (40, 6431334), (42, 6125080), (48, 5359445), (52, 4947180), (56, 4593810), (60, 4287556), (65, 3957744), (70, 3675048), (78, 3298120), (80, 3215667), (84, 3062540), (91, 2826960), (104, 2473590), (105, 2450032), (112, 2296905), (120, 2143778), (130, 1978872), (140, 1837524), (156, 1649060), (168, 1531270), (182, 1413480), (195, 1319248), (208, 1236795), (210, 1225016), (240, 1071889), (260, 989436), (273, 942320), (280, 918762), (312, 824530), (336, 765635), (364, 706740), (390, 659624), (420, 612508), (455, 565392), (520, 494718), (546, 471160), (560, 459381), (624, 412265), (728, 353370), (780, 329812), (840, 306254), (910, 282696), (1040, 247359), (1092, 235580), (1365, 188464), (1456, 176685), (1560, 164906), (1680, 153127), (1820, 141348), (2184, 117790), (2730, 94232), (3120, 82453), (3640, 70674), (4368, 58895), (5460, 47116), (7280, 35337), (10920, 23558), (11779, 21840)]