64860520

素因数分解:

$2^3\times 5^1\times {\mathrm{1181}}^1\times {\mathrm{1373}}^1$

素因数の和:2565

約数の個数: 32

約数和(自身を含む): 146166120

約数和(自身を除く): 81305600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1181, 1373, 2362, 2746, 4724, 5492, 5905, 6865, 9448, 10984, 11810, 13730, 23620, 27460, 47240, 54920, 1621513, 3243026, 6486052, 8107565, 12972104, 16215130, 32430260, 64860520]

約数ペア:

[(1, 64860520), (2, 32430260), (4, 16215130), (5, 12972104), (8, 8107565), (10, 6486052), (20, 3243026), (40, 1621513), (1181, 54920), (1373, 47240), (2362, 27460), (2746, 23620), (4724, 13730), (5492, 11810), (5905, 10984), (6865, 9448)]