21099960

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2791}}^1$

素因数の和:2818

約数の個数: 128

約数和(自身を含む): 80409600

約数和(自身を除く): 59309640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 2791, 3780, 5582, 7560, 8373, 11164, 13955, 16746, 19537, 22328, 25119, 27910, 33492, 39074, 41865, 50238, 55820, 58611, 66984, 75357, 78148, 83730, 97685, 100476, 111640, 117222, 125595, 150714, 156296, 167460, 175833, 195370, 200952, 234444, 251190, 293055, 301428, 334920, 351666, 376785, 390740, 468888, 502380, 527499, 586110, 602856, 703332, 753570, 781480, 879165, 1004760, 1054998, 1172220, 1406664, 1507140, 1758330, 2109996, 2344440, 2637495, 3014280, 3516660, 4219992, 5274990, 7033320, 10549980, 21099960]

約数ペア:

[(1, 21099960), (2, 10549980), (3, 7033320), (4, 5274990), (5, 4219992), (6, 3516660), (7, 3014280), (8, 2637495), (9, 2344440), (10, 2109996), (12, 1758330), (14, 1507140), (15, 1406664), (18, 1172220), (20, 1054998), (21, 1004760), (24, 879165), (27, 781480), (28, 753570), (30, 703332), (35, 602856), (36, 586110), (40, 527499), (42, 502380), (45, 468888), (54, 390740), (56, 376785), (60, 351666), (63, 334920), (70, 301428), (72, 293055), (84, 251190), (90, 234444), (105, 200952), (108, 195370), (120, 175833), (126, 167460), (135, 156296), (140, 150714), (168, 125595), (180, 117222), (189, 111640), (210, 100476), (216, 97685), (252, 83730), (270, 78148), (280, 75357), (315, 66984), (360, 58611), (378, 55820), (420, 50238), (504, 41865), (540, 39074), (630, 33492), (756, 27910), (840, 25119), (945, 22328), (1080, 19537), (1260, 16746), (1512, 13955), (1890, 11164), (2520, 8373), (2791, 7560), (3780, 5582)]