20679560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1093}}^1$

素因数の和:1158

約数の個数: 64

約数和(自身を含む): 51986880

約数和(自身を除く): 31307320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 946, 1093, 1720, 1892, 2186, 2365, 3784, 4372, 4730, 5465, 8744, 9460, 10930, 12023, 18920, 21860, 24046, 43720, 46999, 48092, 60115, 93998, 96184, 120230, 187996, 234995, 240460, 375992, 469990, 480920, 516989, 939980, 1033978, 1879960, 2067956, 2584945, 4135912, 5169890, 10339780, 20679560]

約数ペア:

[(1, 20679560), (2, 10339780), (4, 5169890), (5, 4135912), (8, 2584945), (10, 2067956), (11, 1879960), (20, 1033978), (22, 939980), (40, 516989), (43, 480920), (44, 469990), (55, 375992), (86, 240460), (88, 234995), (110, 187996), (172, 120230), (215, 96184), (220, 93998), (344, 60115), (430, 48092), (440, 46999), (473, 43720), (860, 24046), (946, 21860), (1093, 18920), (1720, 12023), (1892, 10930), (2186, 9460), (2365, 8744), (3784, 5465), (4372, 4730)]