21715680

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{281}}^1$

素因数の和:329

約数の個数: 192

約数和(自身を含む): 81865728

約数和(自身を除く): 60150048

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 32, 35, 40, 42, 46, 48, 56, 60, 69, 70, 80, 84, 92, 96, 105, 112, 115, 120, 138, 140, 160, 161, 168, 184, 210, 224, 230, 240, 276, 280, 281, 322, 336, 345, 368, 420, 460, 480, 483, 552, 560, 562, 644, 672, 690, 736, 805, 840, 843, 920, 966, 1104, 1120, 1124, 1288, 1380, 1405, 1610, 1680, 1686, 1840, 1932, 1967, 2208, 2248, 2415, 2576, 2760, 2810, 3220, 3360, 3372, 3680, 3864, 3934, 4215, 4496, 4830, 5152, 5520, 5620, 5901, 6440, 6463, 6744, 7728, 7868, 8430, 8992, 9660, 9835, 11040, 11240, 11802, 12880, 12926, 13488, 15456, 15736, 16860, 19320, 19389, 19670, 22480, 23604, 25760, 25852, 26976, 29505, 31472, 32315, 33720, 38640, 38778, 39340, 44960, 45241, 47208, 51704, 59010, 62944, 64630, 67440, 77280, 77556, 78680, 90482, 94416, 96945, 103408, 118020, 129260, 134880, 135723, 155112, 157360, 180964, 188832, 193890, 206816, 226205, 236040, 258520, 271446, 310224, 314720, 361928, 387780, 452410, 472080, 517040, 542892, 620448, 678615, 723856, 775560, 904820, 944160, 1034080, 1085784, 1357230, 1447712, 1551120, 1809640, 2171568, 2714460, 3102240, 3619280, 4343136, 5428920, 7238560, 10857840, 21715680]

約数ペア:

[(1, 21715680), (2, 10857840), (3, 7238560), (4, 5428920), (5, 4343136), (6, 3619280), (7, 3102240), (8, 2714460), (10, 2171568), (12, 1809640), (14, 1551120), (15, 1447712), (16, 1357230), (20, 1085784), (21, 1034080), (23, 944160), (24, 904820), (28, 775560), (30, 723856), (32, 678615), (35, 620448), (40, 542892), (42, 517040), (46, 472080), (48, 452410), (56, 387780), (60, 361928), (69, 314720), (70, 310224), (80, 271446), (84, 258520), (92, 236040), (96, 226205), (105, 206816), (112, 193890), (115, 188832), (120, 180964), (138, 157360), (140, 155112), (160, 135723), (161, 134880), (168, 129260), (184, 118020), (210, 103408), (224, 96945), (230, 94416), (240, 90482), (276, 78680), (280, 77556), (281, 77280), (322, 67440), (336, 64630), (345, 62944), (368, 59010), (420, 51704), (460, 47208), (480, 45241), (483, 44960), (552, 39340), (560, 38778), (562, 38640), (644, 33720), (672, 32315), (690, 31472), (736, 29505), (805, 26976), (840, 25852), (843, 25760), (920, 23604), (966, 22480), (1104, 19670), (1120, 19389), (1124, 19320), (1288, 16860), (1380, 15736), (1405, 15456), (1610, 13488), (1680, 12926), (1686, 12880), (1840, 11802), (1932, 11240), (1967, 11040), (2208, 9835), (2248, 9660), (2415, 8992), (2576, 8430), (2760, 7868), (2810, 7728), (3220, 6744), (3360, 6463), (3372, 6440), (3680, 5901), (3864, 5620), (3934, 5520), (4215, 5152), (4496, 4830)]