21468720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{983}}^1$

素因数の和:1019

約数の個数: 160

約数和(自身を含む): 81994752

約数和(自身を除く): 60526032

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, 983, 1040, 1092, 1365, 1456, 1560, 1680, 1820, 1966, 2184, 2730, 2949, 3120, 3640, 3932, 4368, 4915, 5460, 5898, 6881, 7280, 7864, 9830, 10920, 11796, 12779, 13762, 14745, 15728, 19660, 20643, 21840, 23592, 25558, 27524, 29490, 34405, 38337, 39320, 41286, 47184, 51116, 55048, 58980, 63895, 68810, 76674, 78640, 82572, 89453, 102232, 103215, 110096, 117960, 127790, 137620, 153348, 165144, 178906, 191685, 204464, 206430, 235920, 255580, 268359, 275240, 306696, 330288, 357812, 383370, 412860, 447265, 511160, 536718, 550480, 613392, 715624, 766740, 825720, 894530, 1022320, 1073436, 1341795, 1431248, 1533480, 1651440, 1789060, 2146872, 2683590, 3066960, 3578120, 4293744, 5367180, 7156240, 10734360, 21468720]

約数ペア:

[(1, 21468720), (2, 10734360), (3, 7156240), (4, 5367180), (5, 4293744), (6, 3578120), (7, 3066960), (8, 2683590), (10, 2146872), (12, 1789060), (13, 1651440), (14, 1533480), (15, 1431248), (16, 1341795), (20, 1073436), (21, 1022320), (24, 894530), (26, 825720), (28, 766740), (30, 715624), (35, 613392), (39, 550480), (40, 536718), (42, 511160), (48, 447265), (52, 412860), (56, 383370), (60, 357812), (65, 330288), (70, 306696), (78, 275240), (80, 268359), (84, 255580), (91, 235920), (104, 206430), (105, 204464), (112, 191685), (120, 178906), (130, 165144), (140, 153348), (156, 137620), (168, 127790), (182, 117960), (195, 110096), (208, 103215), (210, 102232), (240, 89453), (260, 82572), (273, 78640), (280, 76674), (312, 68810), (336, 63895), (364, 58980), (390, 55048), (420, 51116), (455, 47184), (520, 41286), (546, 39320), (560, 38337), (624, 34405), (728, 29490), (780, 27524), (840, 25558), (910, 23592), (983, 21840), (1040, 20643), (1092, 19660), (1365, 15728), (1456, 14745), (1560, 13762), (1680, 12779), (1820, 11796), (1966, 10920), (2184, 9830), (2730, 7864), (2949, 7280), (3120, 6881), (3640, 5898), (3932, 5460), (4368, 4915)]