21097860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{263}}^1$

素因数の和:473

約数の個数: 96

約数和(自身を含む): 68124672

約数和(自身を除く): 47026812

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 191, 210, 263, 382, 420, 526, 573, 764, 789, 955, 1052, 1146, 1315, 1337, 1578, 1841, 1910, 2292, 2630, 2674, 2865, 3156, 3682, 3820, 3945, 4011, 5260, 5348, 5523, 5730, 6685, 7364, 7890, 8022, 9205, 11046, 11460, 13370, 15780, 16044, 18410, 20055, 22092, 26740, 27615, 36820, 40110, 50233, 55230, 80220, 100466, 110460, 150699, 200932, 251165, 301398, 351631, 502330, 602796, 703262, 753495, 1004660, 1054893, 1406524, 1506990, 1758155, 2109786, 3013980, 3516310, 4219572, 5274465, 7032620, 10548930, 21097860]

約数ペア:

[(1, 21097860), (2, 10548930), (3, 7032620), (4, 5274465), (5, 4219572), (6, 3516310), (7, 3013980), (10, 2109786), (12, 1758155), (14, 1506990), (15, 1406524), (20, 1054893), (21, 1004660), (28, 753495), (30, 703262), (35, 602796), (42, 502330), (60, 351631), (70, 301398), (84, 251165), (105, 200932), (140, 150699), (191, 110460), (210, 100466), (263, 80220), (382, 55230), (420, 50233), (526, 40110), (573, 36820), (764, 27615), (789, 26740), (955, 22092), (1052, 20055), (1146, 18410), (1315, 16044), (1337, 15780), (1578, 13370), (1841, 11460), (1910, 11046), (2292, 9205), (2630, 8022), (2674, 7890), (2865, 7364), (3156, 6685), (3682, 5730), (3820, 5523), (3945, 5348), (4011, 5260)]