20172746240

素因数分解:

$2^9\times 5^1\times {\mathrm{7879979}}^1$

素因数の和:7880002

約数の個数: 40

約数和(自身を含む): 48367317240

約数和(自身を除く): 28194571000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 7879979, 15759958, 31519916, 39399895, 63039832, 78799790, 126079664, 157599580, 252159328, 315199160, 504318656, 630398320, 1008637312, 1260796640, 2017274624, 2521593280, 4034549248, 5043186560, 10086373120, 20172746240]

約数ペア:

[(1, 20172746240), (2, 10086373120), (4, 5043186560), (5, 4034549248), (8, 2521593280), (10, 2017274624), (16, 1260796640), (20, 1008637312), (32, 630398320), (40, 504318656), (64, 315199160), (80, 252159328), (128, 157599580), (160, 126079664), (256, 78799790), (320, 63039832), (512, 39399895), (640, 31519916), (1280, 15759958), (2560, 7879979)]