20767760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1051}}^1$

素因数の和:1096

約数の個数: 80

約数和(自身を含む): 54788160

約数和(自身を除く): 34020400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1051, 1235, 1520, 1976, 2102, 2470, 3952, 4204, 4940, 5255, 8408, 9880, 10510, 13663, 16816, 19760, 19969, 21020, 27326, 39938, 42040, 54652, 68315, 79876, 84080, 99845, 109304, 136630, 159752, 199690, 218608, 259597, 273260, 319504, 399380, 519194, 546520, 798760, 1038388, 1093040, 1297985, 1597520, 2076776, 2595970, 4153552, 5191940, 10383880, 20767760]

約数ペア:

[(1, 20767760), (2, 10383880), (4, 5191940), (5, 4153552), (8, 2595970), (10, 2076776), (13, 1597520), (16, 1297985), (19, 1093040), (20, 1038388), (26, 798760), (38, 546520), (40, 519194), (52, 399380), (65, 319504), (76, 273260), (80, 259597), (95, 218608), (104, 199690), (130, 159752), (152, 136630), (190, 109304), (208, 99845), (247, 84080), (260, 79876), (304, 68315), (380, 54652), (494, 42040), (520, 39938), (760, 27326), (988, 21020), (1040, 19969), (1051, 19760), (1235, 16816), (1520, 13663), (1976, 10510), (2102, 9880), (2470, 8408), (3952, 5255), (4204, 4940)]