21140480

素因数分解:

$2^{10}\times 5^1\times {\mathrm{4129}}^1$

素因数の和:4154

約数の個数: 44

約数和(自身を含む): 50724660

約数和(自身を除く): 29584180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 4129, 5120, 8258, 16516, 20645, 33032, 41290, 66064, 82580, 132128, 165160, 264256, 330320, 528512, 660640, 1057024, 1321280, 2114048, 2642560, 4228096, 5285120, 10570240, 21140480]

約数ペア:

[(1, 21140480), (2, 10570240), (4, 5285120), (5, 4228096), (8, 2642560), (10, 2114048), (16, 1321280), (20, 1057024), (32, 660640), (40, 528512), (64, 330320), (80, 264256), (128, 165160), (160, 132128), (256, 82580), (320, 66064), (512, 41290), (640, 33032), (1024, 20645), (1280, 16516), (2560, 8258), (4129, 5120)]