208078180

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{239}}^1\times {\mathrm{431}}^1$

素因数の和:780

約数の個数: 48

約数和(自身を含む): 444165120

約数和(自身を除く): 236086940

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 239, 404, 431, 478, 505, 862, 956, 1010, 1195, 1724, 2020, 2155, 2390, 4310, 4780, 8620, 24139, 43531, 48278, 87062, 96556, 103009, 120695, 174124, 206018, 217655, 241390, 412036, 435310, 482780, 515045, 870620, 1030090, 2060180, 10403909, 20807818, 41615636, 52019545, 104039090, 208078180]

約数ペア:

[(1, 208078180), (2, 104039090), (4, 52019545), (5, 41615636), (10, 20807818), (20, 10403909), (101, 2060180), (202, 1030090), (239, 870620), (404, 515045), (431, 482780), (478, 435310), (505, 412036), (862, 241390), (956, 217655), (1010, 206018), (1195, 174124), (1724, 120695), (2020, 103009), (2155, 96556), (2390, 87062), (4310, 48278), (4780, 43531), (8620, 24139)]