400243040

素因数分解:

$2^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{19697}}^1$

素因数の和:19839

約数の個数: 48

約数和(自身を含む): 953068032

約数和(自身を除く): 552824992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 1016, 1270, 2032, 2540, 4064, 5080, 10160, 19697, 20320, 39394, 78788, 98485, 157576, 196970, 315152, 393940, 630304, 787880, 1575760, 2501519, 3151520, 5003038, 10006076, 12507595, 20012152, 25015190, 40024304, 50030380, 80048608, 100060760, 200121520, 400243040]

約数ペア:

[(1, 400243040), (2, 200121520), (4, 100060760), (5, 80048608), (8, 50030380), (10, 40024304), (16, 25015190), (20, 20012152), (32, 12507595), (40, 10006076), (80, 5003038), (127, 3151520), (160, 2501519), (254, 1575760), (508, 787880), (635, 630304), (1016, 393940), (1270, 315152), (2032, 196970), (2540, 157576), (4064, 98485), (5080, 78788), (10160, 39394), (19697, 20320)]