20794880

素因数分解:

$2^9\times 5^1\times {\mathrm{8123}}^1$

素因数の和:8146

約数の個数: 40

約数和(自身を含む): 49865112

約数和(自身を除く): 29070232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 8123, 16246, 32492, 40615, 64984, 81230, 129968, 162460, 259936, 324920, 519872, 649840, 1039744, 1299680, 2079488, 2599360, 4158976, 5198720, 10397440, 20794880]

約数ペア:

[(1, 20794880), (2, 10397440), (4, 5198720), (5, 4158976), (8, 2599360), (10, 2079488), (16, 1299680), (20, 1039744), (32, 649840), (40, 519872), (64, 324920), (80, 259936), (128, 162460), (160, 129968), (256, 81230), (320, 64984), (512, 40615), (640, 32492), (1280, 16246), (2560, 8123)]