20690560

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2939}}^1$

素因数の和:2969

約数の個数: 64

約数和(自身を含む): 53978400

約数和(自身を除く): 33287840

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 2939, 3520, 5878, 7040, 11756, 14695, 23512, 29390, 32329, 47024, 58780, 64658, 94048, 117560, 129316, 161645, 188096, 235120, 258632, 323290, 376192, 470240, 517264, 646580, 940480, 1034528, 1293160, 1880960, 2069056, 2586320, 4138112, 5172640, 10345280, 20690560]

約数ペア:

[(1, 20690560), (2, 10345280), (4, 5172640), (5, 4138112), (8, 2586320), (10, 2069056), (11, 1880960), (16, 1293160), (20, 1034528), (22, 940480), (32, 646580), (40, 517264), (44, 470240), (55, 376192), (64, 323290), (80, 258632), (88, 235120), (110, 188096), (128, 161645), (160, 129316), (176, 117560), (220, 94048), (320, 64658), (352, 58780), (440, 47024), (640, 32329), (704, 29390), (880, 23512), (1408, 14695), (1760, 11756), (2939, 7040), (3520, 5878)]