20154880

素因数分解:

$2^9\times 5^1\times {\mathrm{7873}}^1$

素因数の和:7896

約数の個数: 40

約数和(自身を含む): 48330612

約数和(自身を除く): 28175732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 7873, 15746, 31492, 39365, 62984, 78730, 125968, 157460, 251936, 314920, 503872, 629840, 1007744, 1259680, 2015488, 2519360, 4030976, 5038720, 10077440, 20154880]

約数ペア:

[(1, 20154880), (2, 10077440), (4, 5038720), (5, 4030976), (8, 2519360), (10, 2015488), (16, 1259680), (20, 1007744), (32, 629840), (40, 503872), (64, 314920), (80, 251936), (128, 157460), (160, 125968), (256, 78730), (320, 62984), (512, 39365), (640, 31492), (1280, 15746), (2560, 7873)]