21289380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{293}}^1$

素因数の和:485

約数の個数: 96

約数和(自身を含む): 68753664

約数和(自身を除く): 47464284

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, 173, 210, 293, 346, 420, 519, 586, 692, 865, 879, 1038, 1172, 1211, 1465, 1730, 1758, 2051, 2076, 2422, 2595, 2930, 3460, 3516, 3633, 4102, 4395, 4844, 5190, 5860, 6055, 6153, 7266, 8204, 8790, 10255, 10380, 12110, 12306, 14532, 17580, 18165, 20510, 24220, 24612, 30765, 36330, 41020, 50689, 61530, 72660, 101378, 123060, 152067, 202756, 253445, 304134, 354823, 506890, 608268, 709646, 760335, 1013780, 1064469, 1419292, 1520670, 1774115, 2128938, 3041340, 3548230, 4257876, 5322345, 7096460, 10644690, 21289380]

約数ペア:

[(1, 21289380), (2, 10644690), (3, 7096460), (4, 5322345), (5, 4257876), (6, 3548230), (7, 3041340), (10, 2128938), (12, 1774115), (14, 1520670), (15, 1419292), (20, 1064469), (21, 1013780), (28, 760335), (30, 709646), (35, 608268), (42, 506890), (60, 354823), (70, 304134), (84, 253445), (105, 202756), (140, 152067), (173, 123060), (210, 101378), (293, 72660), (346, 61530), (420, 50689), (519, 41020), (586, 36330), (692, 30765), (865, 24612), (879, 24220), (1038, 20510), (1172, 18165), (1211, 17580), (1465, 14532), (1730, 12306), (1758, 12110), (2051, 10380), (2076, 10255), (2422, 8790), (2595, 8204), (2930, 7266), (3460, 6153), (3516, 6055), (3633, 5860), (4102, 5190), (4395, 4844)]