21847560

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{839}}^1$

素因数の和:891

約数の個数: 128

約数和(自身を含む): 77414400

約数和(自身を除く): 55566840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 140, 155, 168, 186, 210, 217, 248, 280, 310, 372, 420, 434, 465, 620, 651, 744, 839, 840, 868, 930, 1085, 1240, 1302, 1678, 1736, 1860, 2170, 2517, 2604, 3255, 3356, 3720, 4195, 4340, 5034, 5208, 5873, 6510, 6712, 8390, 8680, 10068, 11746, 12585, 13020, 16780, 17619, 20136, 23492, 25170, 26009, 26040, 29365, 33560, 35238, 46984, 50340, 52018, 58730, 70476, 78027, 88095, 100680, 104036, 117460, 130045, 140952, 156054, 176190, 182063, 208072, 234920, 260090, 312108, 352380, 364126, 390135, 520180, 546189, 624216, 704760, 728252, 780270, 910315, 1040360, 1092378, 1456504, 1560540, 1820630, 2184756, 2730945, 3121080, 3641260, 4369512, 5461890, 7282520, 10923780, 21847560]

約数ペア:

[(1, 21847560), (2, 10923780), (3, 7282520), (4, 5461890), (5, 4369512), (6, 3641260), (7, 3121080), (8, 2730945), (10, 2184756), (12, 1820630), (14, 1560540), (15, 1456504), (20, 1092378), (21, 1040360), (24, 910315), (28, 780270), (30, 728252), (31, 704760), (35, 624216), (40, 546189), (42, 520180), (56, 390135), (60, 364126), (62, 352380), (70, 312108), (84, 260090), (93, 234920), (105, 208072), (120, 182063), (124, 176190), (140, 156054), (155, 140952), (168, 130045), (186, 117460), (210, 104036), (217, 100680), (248, 88095), (280, 78027), (310, 70476), (372, 58730), (420, 52018), (434, 50340), (465, 46984), (620, 35238), (651, 33560), (744, 29365), (839, 26040), (840, 26009), (868, 25170), (930, 23492), (1085, 20136), (1240, 17619), (1302, 16780), (1678, 13020), (1736, 12585), (1860, 11746), (2170, 10068), (2517, 8680), (2604, 8390), (3255, 6712), (3356, 6510), (3720, 5873), (4195, 5208), (4340, 5034)]