251671140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{199739}}^1$

素因数の和:199761

約数の個数: 72

約数和(自身を含む): 872464320

約数和(自身を除く): 620793180

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 199739, 399478, 599217, 798956, 998695, 1198434, 1398173, 1797651, 1997390, 2396868, 2796346, 2996085, 3595302, 3994780, 4194519, 5592692, 5992170, 6990865, 7190604, 8389038, 8988255, 11984340, 12583557, 13981730, 16778076, 17976510, 20972595, 25167114, 27963460, 35953020, 41945190, 50334228, 62917785, 83890380, 125835570, 251671140]

約数ペア:

[(1, 251671140), (2, 125835570), (3, 83890380), (4, 62917785), (5, 50334228), (6, 41945190), (7, 35953020), (9, 27963460), (10, 25167114), (12, 20972595), (14, 17976510), (15, 16778076), (18, 13981730), (20, 12583557), (21, 11984340), (28, 8988255), (30, 8389038), (35, 7190604), (36, 6990865), (42, 5992170), (45, 5592692), (60, 4194519), (63, 3994780), (70, 3595302), (84, 2996085), (90, 2796346), (105, 2396868), (126, 1997390), (140, 1797651), (180, 1398173), (210, 1198434), (252, 998695), (315, 798956), (420, 599217), (630, 399478), (1260, 199739)]