20202854920

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{457}}^1\times {\mathrm{7951}}^1$

素因数の和:8558

約数の個数: 64

約数和(自身を含む): 45889401600

約数和(自身を除く): 25686546680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 457, 556, 695, 914, 1112, 1390, 1828, 2285, 2780, 3656, 4570, 5560, 7951, 9140, 15902, 18280, 31804, 39755, 63523, 63608, 79510, 127046, 159020, 254092, 317615, 318040, 508184, 635230, 1105189, 1270460, 2210378, 2540920, 3633607, 4420756, 5525945, 7267214, 8841512, 11051890, 14534428, 18168035, 22103780, 29068856, 36336070, 44207560, 72672140, 145344280, 505071373, 1010142746, 2020285492, 2525356865, 4040570984, 5050713730, 10101427460, 20202854920]

約数ペア:

[(1, 20202854920), (2, 10101427460), (4, 5050713730), (5, 4040570984), (8, 2525356865), (10, 2020285492), (20, 1010142746), (40, 505071373), (139, 145344280), (278, 72672140), (457, 44207560), (556, 36336070), (695, 29068856), (914, 22103780), (1112, 18168035), (1390, 14534428), (1828, 11051890), (2285, 8841512), (2780, 7267214), (3656, 5525945), (4570, 4420756), (5560, 3633607), (7951, 2540920), (9140, 2210378), (15902, 1270460), (18280, 1105189), (31804, 635230), (39755, 508184), (63523, 318040), (63608, 317615), (79510, 254092), (127046, 159020)]