20178859520

素因数分解:

$2^9\times 5^1\times {\mathrm{7882367}}^1$

素因数の和:7882390

約数の個数: 40

約数和(自身を含む): 48381974784

約数和(自身を除く): 28203115264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 7882367, 15764734, 31529468, 39411835, 63058936, 78823670, 126117872, 157647340, 252235744, 315294680, 504471488, 630589360, 1008942976, 1261178720, 2017885952, 2522357440, 4035771904, 5044714880, 10089429760, 20178859520]

約数ペア:

[(1, 20178859520), (2, 10089429760), (4, 5044714880), (5, 4035771904), (8, 2522357440), (10, 2017885952), (16, 1261178720), (20, 1008942976), (32, 630589360), (40, 504471488), (64, 315294680), (80, 252235744), (128, 157647340), (160, 126117872), (256, 78823670), (320, 63058936), (512, 39411835), (640, 31529468), (1280, 15764734), (2560, 7882367)]