20604520

素因数分解:

$2^3\times 5^1\times {\mathrm{373}}^1\times {\mathrm{1381}}^1$

素因数の和:1765

約数の個数: 32

約数和(自身を含む): 46518120

約数和(自身を除く): 25913600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 373, 746, 1381, 1492, 1865, 2762, 2984, 3730, 5524, 6905, 7460, 11048, 13810, 14920, 27620, 55240, 515113, 1030226, 2060452, 2575565, 4120904, 5151130, 10302260, 20604520]

約数ペア:

[(1, 20604520), (2, 10302260), (4, 5151130), (5, 4120904), (8, 2575565), (10, 2060452), (20, 1030226), (40, 515113), (373, 55240), (746, 27620), (1381, 14920), (1492, 13810), (1865, 11048), (2762, 7460), (2984, 6905), (3730, 5524)]