21132303440

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1187}}^1\times {\mathrm{1601}}^1$

素因数の和:2940

約数の個数: 80

約数和(自身を含む): 49558703040

約数和(自身を除く): 28426399600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1187, 1390, 1601, 2224, 2374, 2780, 3202, 4748, 5560, 5935, 6404, 8005, 9496, 11120, 11870, 12808, 16010, 18992, 23740, 25616, 32020, 47480, 64040, 94960, 128080, 164993, 222539, 329986, 445078, 659972, 824965, 890156, 1112695, 1319944, 1649930, 1780312, 1900387, 2225390, 2639888, 3299860, 3560624, 3800774, 4450780, 6599720, 7601548, 8901560, 9501935, 13199440, 15203096, 17803120, 19003870, 30406192, 38007740, 76015480, 152030960, 264153793, 528307586, 1056615172, 1320768965, 2113230344, 2641537930, 4226460688, 5283075860, 10566151720, 21132303440]

約数ペア:

[(1, 21132303440), (2, 10566151720), (4, 5283075860), (5, 4226460688), (8, 2641537930), (10, 2113230344), (16, 1320768965), (20, 1056615172), (40, 528307586), (80, 264153793), (139, 152030960), (278, 76015480), (556, 38007740), (695, 30406192), (1112, 19003870), (1187, 17803120), (1390, 15203096), (1601, 13199440), (2224, 9501935), (2374, 8901560), (2780, 7601548), (3202, 6599720), (4748, 4450780), (5560, 3800774), (5935, 3560624), (6404, 3299860), (8005, 2639888), (9496, 2225390), (11120, 1900387), (11870, 1780312), (12808, 1649930), (16010, 1319944), (18992, 1112695), (23740, 890156), (25616, 824965), (32020, 659972), (47480, 445078), (64040, 329986), (94960, 222539), (128080, 164993)]