21760620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{263}}^1$

素因数の和:479

約数の個数: 96

約数和(自身を含む): 70253568

約数和(自身を除く): 48492948

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, 197, 210, 263, 394, 420, 526, 591, 788, 789, 985, 1052, 1182, 1315, 1379, 1578, 1841, 1970, 2364, 2630, 2758, 2955, 3156, 3682, 3940, 3945, 4137, 5260, 5516, 5523, 5910, 6895, 7364, 7890, 8274, 9205, 11046, 11820, 13790, 15780, 16548, 18410, 20685, 22092, 27580, 27615, 36820, 41370, 51811, 55230, 82740, 103622, 110460, 155433, 207244, 259055, 310866, 362677, 518110, 621732, 725354, 777165, 1036220, 1088031, 1450708, 1554330, 1813385, 2176062, 3108660, 3626770, 4352124, 5440155, 7253540, 10880310, 21760620]

約数ペア:

[(1, 21760620), (2, 10880310), (3, 7253540), (4, 5440155), (5, 4352124), (6, 3626770), (7, 3108660), (10, 2176062), (12, 1813385), (14, 1554330), (15, 1450708), (20, 1088031), (21, 1036220), (28, 777165), (30, 725354), (35, 621732), (42, 518110), (60, 362677), (70, 310866), (84, 259055), (105, 207244), (140, 155433), (197, 110460), (210, 103622), (263, 82740), (394, 55230), (420, 51811), (526, 41370), (591, 36820), (788, 27615), (789, 27580), (985, 22092), (1052, 20685), (1182, 18410), (1315, 16548), (1379, 15780), (1578, 13790), (1841, 11820), (1970, 11046), (2364, 9205), (2630, 8274), (2758, 7890), (2955, 7364), (3156, 6895), (3682, 5910), (3940, 5523), (3945, 5516), (4137, 5260)]