21945420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17417}}^1$

素因数の和:17439

約数の個数: 72

約数和(自身を含む): 76081824

約数和(自身を除く): 54136404

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17417, 34834, 52251, 69668, 87085, 104502, 121919, 156753, 174170, 209004, 243838, 261255, 313506, 348340, 365757, 487676, 522510, 609595, 627012, 731514, 783765, 1045020, 1097271, 1219190, 1463028, 1567530, 1828785, 2194542, 2438380, 3135060, 3657570, 4389084, 5486355, 7315140, 10972710, 21945420]

約数ペア:

[(1, 21945420), (2, 10972710), (3, 7315140), (4, 5486355), (5, 4389084), (6, 3657570), (7, 3135060), (9, 2438380), (10, 2194542), (12, 1828785), (14, 1567530), (15, 1463028), (18, 1219190), (20, 1097271), (21, 1045020), (28, 783765), (30, 731514), (35, 627012), (36, 609595), (42, 522510), (45, 487676), (60, 365757), (63, 348340), (70, 313506), (84, 261255), (90, 243838), (105, 209004), (126, 174170), (140, 156753), (180, 121919), (210, 104502), (252, 87085), (315, 69668), (420, 52251), (630, 34834), (1260, 17417)]