21738780

素因数分解:

$2^2\times 3^7\times 5^1\times 7^1\times {\mathrm{71}}^1$

素因数の和:108

約数の個数: 192

約数和(自身を含む): 79349760

約数和(自身を除く): 57610980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 71, 81, 84, 90, 105, 108, 126, 135, 140, 142, 162, 180, 189, 210, 213, 243, 252, 270, 284, 315, 324, 355, 378, 405, 420, 426, 486, 497, 540, 567, 630, 639, 710, 729, 756, 810, 852, 945, 972, 994, 1065, 1134, 1215, 1260, 1278, 1420, 1458, 1491, 1620, 1701, 1890, 1917, 1988, 2130, 2187, 2268, 2430, 2485, 2556, 2835, 2916, 2982, 3195, 3402, 3645, 3780, 3834, 4260, 4374, 4473, 4860, 4970, 5103, 5670, 5751, 5964, 6390, 6804, 7290, 7455, 7668, 8505, 8748, 8946, 9585, 9940, 10206, 10935, 11340, 11502, 12780, 13419, 14580, 14910, 15309, 17010, 17253, 17892, 19170, 20412, 21870, 22365, 23004, 25515, 26838, 28755, 29820, 30618, 34020, 34506, 38340, 40257, 43740, 44730, 51030, 51759, 53676, 57510, 61236, 67095, 69012, 76545, 80514, 86265, 89460, 102060, 103518, 115020, 120771, 134190, 153090, 155277, 161028, 172530, 201285, 207036, 241542, 258795, 268380, 306180, 310554, 345060, 362313, 402570, 483084, 517590, 603855, 621108, 724626, 776385, 805140, 1035180, 1086939, 1207710, 1449252, 1552770, 1811565, 2173878, 2415420, 3105540, 3623130, 4347756, 5434695, 7246260, 10869390, 21738780]

約数ペア:

[(1, 21738780), (2, 10869390), (3, 7246260), (4, 5434695), (5, 4347756), (6, 3623130), (7, 3105540), (9, 2415420), (10, 2173878), (12, 1811565), (14, 1552770), (15, 1449252), (18, 1207710), (20, 1086939), (21, 1035180), (27, 805140), (28, 776385), (30, 724626), (35, 621108), (36, 603855), (42, 517590), (45, 483084), (54, 402570), (60, 362313), (63, 345060), (70, 310554), (71, 306180), (81, 268380), (84, 258795), (90, 241542), (105, 207036), (108, 201285), (126, 172530), (135, 161028), (140, 155277), (142, 153090), (162, 134190), (180, 120771), (189, 115020), (210, 103518), (213, 102060), (243, 89460), (252, 86265), (270, 80514), (284, 76545), (315, 69012), (324, 67095), (355, 61236), (378, 57510), (405, 53676), (420, 51759), (426, 51030), (486, 44730), (497, 43740), (540, 40257), (567, 38340), (630, 34506), (639, 34020), (710, 30618), (729, 29820), (756, 28755), (810, 26838), (852, 25515), (945, 23004), (972, 22365), (994, 21870), (1065, 20412), (1134, 19170), (1215, 17892), (1260, 17253), (1278, 17010), (1420, 15309), (1458, 14910), (1491, 14580), (1620, 13419), (1701, 12780), (1890, 11502), (1917, 11340), (1988, 10935), (2130, 10206), (2187, 9940), (2268, 9585), (2430, 8946), (2485, 8748), (2556, 8505), (2835, 7668), (2916, 7455), (2982, 7290), (3195, 6804), (3402, 6390), (3645, 5964), (3780, 5751), (3834, 5670), (4260, 5103), (4374, 4970), (4473, 4860)]