201818620

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1\times {\mathrm{283}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 429837408

約数和(自身を除く): 228018788

約数列:

[1, 2, 4, 5, 10, 20, 181, 197, 283, 362, 394, 566, 724, 788, 905, 985, 1132, 1415, 1810, 1970, 2830, 3620, 3940, 5660, 35657, 51223, 55751, 71314, 102446, 111502, 142628, 178285, 204892, 223004, 256115, 278755, 356570, 512230, 557510, 713140, 1024460, 1115020, 10090931, 20181862, 40363724, 50454655, 100909310, 201818620]

約数ペア:

[(1, 201818620), (2, 100909310), (4, 50454655), (5, 40363724), (10, 20181862), (20, 10090931), (181, 1115020), (197, 1024460), (283, 713140), (362, 557510), (394, 512230), (566, 356570), (724, 278755), (788, 256115), (905, 223004), (985, 204892), (1132, 178285), (1415, 142628), (1810, 111502), (1970, 102446), (2830, 71314), (3620, 55751), (3940, 51223), (5660, 35657)]