21840840

素因数分解:

$2^3\times 3^6\times 5^1\times 7^1\times {\mathrm{107}}^1$

素因数の和:143

約数の個数: 224

約数和(自身を含む): 84991680

約数和(自身を除く): 63150840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 81, 84, 90, 105, 107, 108, 120, 126, 135, 140, 162, 168, 180, 189, 210, 214, 216, 243, 252, 270, 280, 315, 321, 324, 360, 378, 405, 420, 428, 486, 504, 535, 540, 567, 630, 642, 648, 729, 749, 756, 810, 840, 856, 945, 963, 972, 1070, 1080, 1134, 1215, 1260, 1284, 1458, 1498, 1512, 1605, 1620, 1701, 1890, 1926, 1944, 2140, 2247, 2268, 2430, 2520, 2568, 2835, 2889, 2916, 2996, 3210, 3240, 3402, 3645, 3745, 3780, 3852, 4280, 4494, 4536, 4815, 4860, 5103, 5670, 5778, 5832, 5992, 6420, 6741, 6804, 7290, 7490, 7560, 7704, 8505, 8667, 8988, 9630, 9720, 10206, 11235, 11340, 11556, 12840, 13482, 13608, 14445, 14580, 14980, 17010, 17334, 17976, 19260, 20223, 20412, 22470, 22680, 23112, 25515, 26001, 26964, 28890, 29160, 29960, 33705, 34020, 34668, 38520, 40446, 40824, 43335, 44940, 51030, 52002, 53928, 57780, 60669, 67410, 68040, 69336, 78003, 80892, 86670, 89880, 101115, 102060, 104004, 115560, 121338, 130005, 134820, 156006, 161784, 173340, 182007, 202230, 204120, 208008, 242676, 260010, 269640, 303345, 312012, 346680, 364014, 390015, 404460, 485352, 520020, 546021, 606690, 624024, 728028, 780030, 808920, 910035, 1040040, 1092042, 1213380, 1456056, 1560060, 1820070, 2184084, 2426760, 2730105, 3120120, 3640140, 4368168, 5460210, 7280280, 10920420, 21840840]

約数ペア:

[(1, 21840840), (2, 10920420), (3, 7280280), (4, 5460210), (5, 4368168), (6, 3640140), (7, 3120120), (8, 2730105), (9, 2426760), (10, 2184084), (12, 1820070), (14, 1560060), (15, 1456056), (18, 1213380), (20, 1092042), (21, 1040040), (24, 910035), (27, 808920), (28, 780030), (30, 728028), (35, 624024), (36, 606690), (40, 546021), (42, 520020), (45, 485352), (54, 404460), (56, 390015), (60, 364014), (63, 346680), (70, 312012), (72, 303345), (81, 269640), (84, 260010), (90, 242676), (105, 208008), (107, 204120), (108, 202230), (120, 182007), (126, 173340), (135, 161784), (140, 156006), (162, 134820), (168, 130005), (180, 121338), (189, 115560), (210, 104004), (214, 102060), (216, 101115), (243, 89880), (252, 86670), (270, 80892), (280, 78003), (315, 69336), (321, 68040), (324, 67410), (360, 60669), (378, 57780), (405, 53928), (420, 52002), (428, 51030), (486, 44940), (504, 43335), (535, 40824), (540, 40446), (567, 38520), (630, 34668), (642, 34020), (648, 33705), (729, 29960), (749, 29160), (756, 28890), (810, 26964), (840, 26001), (856, 25515), (945, 23112), (963, 22680), (972, 22470), (1070, 20412), (1080, 20223), (1134, 19260), (1215, 17976), (1260, 17334), (1284, 17010), (1458, 14980), (1498, 14580), (1512, 14445), (1605, 13608), (1620, 13482), (1701, 12840), (1890, 11556), (1926, 11340), (1944, 11235), (2140, 10206), (2247, 9720), (2268, 9630), (2430, 8988), (2520, 8667), (2568, 8505), (2835, 7704), (2889, 7560), (2916, 7490), (2996, 7290), (3210, 6804), (3240, 6741), (3402, 6420), (3645, 5992), (3745, 5832), (3780, 5778), (3852, 5670), (4280, 5103), (4494, 4860), (4536, 4815)]