20346880

素因数分解:

$2^{11}\times 5^1\times {\mathrm{1987}}^1$

素因数の和:2014

約数の個数: 48

約数和(自身を含む): 48845160

約数和(自身を除く): 28498280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 1987, 2048, 2560, 3974, 5120, 7948, 9935, 10240, 15896, 19870, 31792, 39740, 63584, 79480, 127168, 158960, 254336, 317920, 508672, 635840, 1017344, 1271680, 2034688, 2543360, 4069376, 5086720, 10173440, 20346880]

約数ペア:

[(1, 20346880), (2, 10173440), (4, 5086720), (5, 4069376), (8, 2543360), (10, 2034688), (16, 1271680), (20, 1017344), (32, 635840), (40, 508672), (64, 317920), (80, 254336), (128, 158960), (160, 127168), (256, 79480), (320, 63584), (512, 39740), (640, 31792), (1024, 19870), (1280, 15896), (1987, 10240), (2048, 9935), (2560, 7948), (3974, 5120)]