20299440

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:347

約数の個数: 160

約数和(自身を含む): 73852416

約数和(自身を除く): 53552976

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 43, 48, 56, 60, 70, 80, 84, 86, 105, 112, 120, 129, 140, 168, 172, 210, 215, 240, 258, 280, 281, 301, 336, 344, 420, 430, 516, 560, 562, 602, 645, 688, 840, 843, 860, 903, 1032, 1124, 1204, 1290, 1405, 1505, 1680, 1686, 1720, 1806, 1967, 2064, 2248, 2408, 2580, 2810, 3010, 3372, 3440, 3612, 3934, 4215, 4496, 4515, 4816, 5160, 5620, 5901, 6020, 6744, 7224, 7868, 8430, 9030, 9835, 10320, 11240, 11802, 12040, 12083, 13488, 14448, 15736, 16860, 18060, 19670, 22480, 23604, 24080, 24166, 29505, 31472, 33720, 36120, 36249, 39340, 47208, 48332, 59010, 60415, 67440, 72240, 72498, 78680, 84581, 94416, 96664, 118020, 120830, 144996, 157360, 169162, 181245, 193328, 236040, 241660, 253743, 289992, 338324, 362490, 422905, 472080, 483320, 507486, 579984, 676648, 724980, 845810, 966640, 1014972, 1268715, 1353296, 1449960, 1691620, 2029944, 2537430, 2899920, 3383240, 4059888, 5074860, 6766480, 10149720, 20299440]

約数ペア:

[(1, 20299440), (2, 10149720), (3, 6766480), (4, 5074860), (5, 4059888), (6, 3383240), (7, 2899920), (8, 2537430), (10, 2029944), (12, 1691620), (14, 1449960), (15, 1353296), (16, 1268715), (20, 1014972), (21, 966640), (24, 845810), (28, 724980), (30, 676648), (35, 579984), (40, 507486), (42, 483320), (43, 472080), (48, 422905), (56, 362490), (60, 338324), (70, 289992), (80, 253743), (84, 241660), (86, 236040), (105, 193328), (112, 181245), (120, 169162), (129, 157360), (140, 144996), (168, 120830), (172, 118020), (210, 96664), (215, 94416), (240, 84581), (258, 78680), (280, 72498), (281, 72240), (301, 67440), (336, 60415), (344, 59010), (420, 48332), (430, 47208), (516, 39340), (560, 36249), (562, 36120), (602, 33720), (645, 31472), (688, 29505), (840, 24166), (843, 24080), (860, 23604), (903, 22480), (1032, 19670), (1124, 18060), (1204, 16860), (1290, 15736), (1405, 14448), (1505, 13488), (1680, 12083), (1686, 12040), (1720, 11802), (1806, 11240), (1967, 10320), (2064, 9835), (2248, 9030), (2408, 8430), (2580, 7868), (2810, 7224), (3010, 6744), (3372, 6020), (3440, 5901), (3612, 5620), (3934, 5160), (4215, 4816), (4496, 4515)]