20811380464

素因数分解:

$2^4\times 7^1\times {\mathrm{109}}^1\times {\mathrm{383}}^1\times {\mathrm{4451}}^1$

素因数の和:4958

約数の個数: 80

約数和(自身を含む): 46637015040

約数和(自身を除く): 25825634576

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 109, 112, 218, 383, 436, 763, 766, 872, 1526, 1532, 1744, 2681, 3052, 3064, 4451, 5362, 6104, 6128, 8902, 10724, 12208, 17804, 21448, 31157, 35608, 41747, 42896, 62314, 71216, 83494, 124628, 166988, 249256, 292229, 333976, 485159, 498512, 584458, 667952, 970318, 1168916, 1704733, 1940636, 2337832, 3396113, 3409466, 3881272, 4675664, 6792226, 6818932, 7762544, 11933131, 13584452, 13637864, 23866262, 27168904, 27275728, 47732524, 54337808, 95465048, 185815897, 190930096, 371631794, 743263588, 1300711279, 1486527176, 2601422558, 2973054352, 5202845116, 10405690232, 20811380464]

約数ペア:

[(1, 20811380464), (2, 10405690232), (4, 5202845116), (7, 2973054352), (8, 2601422558), (14, 1486527176), (16, 1300711279), (28, 743263588), (56, 371631794), (109, 190930096), (112, 185815897), (218, 95465048), (383, 54337808), (436, 47732524), (763, 27275728), (766, 27168904), (872, 23866262), (1526, 13637864), (1532, 13584452), (1744, 11933131), (2681, 7762544), (3052, 6818932), (3064, 6792226), (4451, 4675664), (5362, 3881272), (6104, 3409466), (6128, 3396113), (8902, 2337832), (10724, 1940636), (12208, 1704733), (17804, 1168916), (21448, 970318), (31157, 667952), (35608, 584458), (41747, 498512), (42896, 485159), (62314, 333976), (71216, 292229), (83494, 249256), (124628, 166988)]