20378241

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 34070400

約数和(自身を除く): 13692159

約数列:

[1, 3, 9, 13, 19, 39, 57, 89, 103, 117, 171, 247, 267, 309, 741, 801, 927, 1157, 1339, 1691, 1957, 2223, 3471, 4017, 5073, 5871, 9167, 10413, 12051, 15219, 17613, 21983, 25441, 27501, 65949, 76323, 82503, 119171, 174173, 197847, 228969, 357513, 522519, 1072539, 1567557, 2264249, 6792747, 20378241]

約数ペア:

[(1, 20378241), (3, 6792747), (9, 2264249), (13, 1567557), (19, 1072539), (39, 522519), (57, 357513), (89, 228969), (103, 197847), (117, 174173), (171, 119171), (247, 82503), (267, 76323), (309, 65949), (741, 27501), (801, 25441), (927, 21983), (1157, 17613), (1339, 15219), (1691, 12051), (1957, 10413), (2223, 9167), (3471, 5871), (4017, 5073)]