21008400

素因数分解:

$2^4\times 3^1\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:130

約数の個数: 240

約数和(自身を含む): 80078208

約数和(自身を除く): 59069808

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 35, 40, 41, 42, 48, 50, 56, 60, 61, 70, 75, 80, 82, 84, 100, 105, 112, 120, 122, 123, 140, 150, 164, 168, 175, 183, 200, 205, 210, 240, 244, 246, 280, 287, 300, 305, 328, 336, 350, 366, 400, 410, 420, 427, 488, 492, 525, 560, 574, 600, 610, 615, 656, 700, 732, 820, 840, 854, 861, 915, 976, 984, 1025, 1050, 1148, 1200, 1220, 1230, 1281, 1400, 1435, 1464, 1525, 1640, 1680, 1708, 1722, 1830, 1968, 2050, 2100, 2135, 2296, 2440, 2460, 2501, 2562, 2800, 2870, 2928, 3050, 3075, 3280, 3416, 3444, 3660, 4100, 4200, 4270, 4305, 4575, 4592, 4880, 4920, 5002, 5124, 5740, 6100, 6150, 6405, 6832, 6888, 7175, 7320, 7503, 8200, 8400, 8540, 8610, 9150, 9840, 10004, 10248, 10675, 11480, 12200, 12300, 12505, 12810, 13776, 14350, 14640, 15006, 16400, 17080, 17220, 17507, 18300, 20008, 20496, 21350, 21525, 22960, 24400, 24600, 25010, 25620, 28700, 30012, 32025, 34160, 34440, 35014, 36600, 37515, 40016, 42700, 43050, 49200, 50020, 51240, 52521, 57400, 60024, 62525, 64050, 68880, 70028, 73200, 75030, 85400, 86100, 87535, 100040, 102480, 105042, 114800, 120048, 125050, 128100, 140056, 150060, 170800, 172200, 175070, 187575, 200080, 210084, 250100, 256200, 262605, 280112, 300120, 344400, 350140, 375150, 420168, 437675, 500200, 512400, 525210, 600240, 700280, 750300, 840336, 875350, 1000400, 1050420, 1313025, 1400560, 1500600, 1750700, 2100840, 2626050, 3001200, 3501400, 4201680, 5252100, 7002800, 10504200, 21008400]

約数ペア:

[(1, 21008400), (2, 10504200), (3, 7002800), (4, 5252100), (5, 4201680), (6, 3501400), (7, 3001200), (8, 2626050), (10, 2100840), (12, 1750700), (14, 1500600), (15, 1400560), (16, 1313025), (20, 1050420), (21, 1000400), (24, 875350), (25, 840336), (28, 750300), (30, 700280), (35, 600240), (40, 525210), (41, 512400), (42, 500200), (48, 437675), (50, 420168), (56, 375150), (60, 350140), (61, 344400), (70, 300120), (75, 280112), (80, 262605), (82, 256200), (84, 250100), (100, 210084), (105, 200080), (112, 187575), (120, 175070), (122, 172200), (123, 170800), (140, 150060), (150, 140056), (164, 128100), (168, 125050), (175, 120048), (183, 114800), (200, 105042), (205, 102480), (210, 100040), (240, 87535), (244, 86100), (246, 85400), (280, 75030), (287, 73200), (300, 70028), (305, 68880), (328, 64050), (336, 62525), (350, 60024), (366, 57400), (400, 52521), (410, 51240), (420, 50020), (427, 49200), (488, 43050), (492, 42700), (525, 40016), (560, 37515), (574, 36600), (600, 35014), (610, 34440), (615, 34160), (656, 32025), (700, 30012), (732, 28700), (820, 25620), (840, 25010), (854, 24600), (861, 24400), (915, 22960), (976, 21525), (984, 21350), (1025, 20496), (1050, 20008), (1148, 18300), (1200, 17507), (1220, 17220), (1230, 17080), (1281, 16400), (1400, 15006), (1435, 14640), (1464, 14350), (1525, 13776), (1640, 12810), (1680, 12505), (1708, 12300), (1722, 12200), (1830, 11480), (1968, 10675), (2050, 10248), (2100, 10004), (2135, 9840), (2296, 9150), (2440, 8610), (2460, 8540), (2501, 8400), (2562, 8200), (2800, 7503), (2870, 7320), (2928, 7175), (3050, 6888), (3075, 6832), (3280, 6405), (3416, 6150), (3444, 6100), (3660, 5740), (4100, 5124), (4200, 5002), (4270, 4920), (4305, 4880), (4575, 4592)]