21717080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{641}}^1$

素因数の和:681

約数の個数: 96

約数和(自身を含む): 61477920

約数和(自身を除く): 39760840

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 121, 140, 154, 220, 242, 280, 308, 385, 440, 484, 605, 616, 641, 770, 847, 968, 1210, 1282, 1540, 1694, 2420, 2564, 3080, 3205, 3388, 4235, 4487, 4840, 5128, 6410, 6776, 7051, 8470, 8974, 12820, 14102, 16940, 17948, 22435, 25640, 28204, 33880, 35255, 35896, 44870, 49357, 56408, 70510, 77561, 89740, 98714, 141020, 155122, 179480, 197428, 246785, 282040, 310244, 387805, 394856, 493570, 542927, 620488, 775610, 987140, 1085854, 1551220, 1974280, 2171708, 2714635, 3102440, 4343416, 5429270, 10858540, 21717080]

約数ペア:

[(1, 21717080), (2, 10858540), (4, 5429270), (5, 4343416), (7, 3102440), (8, 2714635), (10, 2171708), (11, 1974280), (14, 1551220), (20, 1085854), (22, 987140), (28, 775610), (35, 620488), (40, 542927), (44, 493570), (55, 394856), (56, 387805), (70, 310244), (77, 282040), (88, 246785), (110, 197428), (121, 179480), (140, 155122), (154, 141020), (220, 98714), (242, 89740), (280, 77561), (308, 70510), (385, 56408), (440, 49357), (484, 44870), (605, 35896), (616, 35255), (641, 33880), (770, 28204), (847, 25640), (968, 22435), (1210, 17948), (1282, 16940), (1540, 14102), (1694, 12820), (2420, 8974), (2564, 8470), (3080, 7051), (3205, 6776), (3388, 6410), (4235, 5128), (4487, 4840)]