20985018728

素因数分解:

$2^3\times {\mathrm{31}}^3\times {\mathrm{191}}^1\times {\mathrm{461}}^1$

素因数の和:751

約数の個数: 64

約数和(自身を含む): 40959959040

約数和(自身を除く): 19974940312

約数列:

[1, 2, 4, 8, 31, 62, 124, 191, 248, 382, 461, 764, 922, 961, 1528, 1844, 1922, 3688, 3844, 5921, 7688, 11842, 14291, 23684, 28582, 29791, 47368, 57164, 59582, 88051, 114328, 119164, 176102, 183551, 238328, 352204, 367102, 443021, 704408, 734204, 886042, 1468408, 1772084, 2729581, 3544168, 5459162, 5690081, 10918324, 11380162, 13733651, 21836648, 22760324, 27467302, 45520648, 54934604, 84617011, 109869208, 169234022, 338468044, 676936088, 2623127341, 5246254682, 10492509364, 20985018728]

約数ペア:

[(1, 20985018728), (2, 10492509364), (4, 5246254682), (8, 2623127341), (31, 676936088), (62, 338468044), (124, 169234022), (191, 109869208), (248, 84617011), (382, 54934604), (461, 45520648), (764, 27467302), (922, 22760324), (961, 21836648), (1528, 13733651), (1844, 11380162), (1922, 10918324), (3688, 5690081), (3844, 5459162), (5921, 3544168), (7688, 2729581), (11842, 1772084), (14291, 1468408), (23684, 886042), (28582, 734204), (29791, 704408), (47368, 443021), (57164, 367102), (59582, 352204), (88051, 238328), (114328, 183551), (119164, 176102)]