887990908

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^2\times {\mathrm{61}}^1\times {\mathrm{541}}^1$

素因数の和:675

約数の個数: 72

約数和(自身を含む): 1868651232

約数和(自身を除く): 980660324

約数列:

[1, 2, 4, 7, 14, 28, 31, 61, 62, 122, 124, 217, 244, 427, 434, 541, 854, 868, 961, 1082, 1708, 1891, 1922, 2164, 3782, 3787, 3844, 6727, 7564, 7574, 13237, 13454, 15148, 16771, 26474, 26908, 33001, 33542, 52948, 58621, 66002, 67084, 117242, 117397, 132004, 231007, 234484, 234794, 410347, 462014, 469588, 519901, 820694, 924028, 1023031, 1039802, 1641388, 2046062, 2079604, 3639307, 4092124, 7161217, 7278614, 14322434, 14557228, 28644868, 31713961, 63427922, 126855844, 221997727, 443995454, 887990908]

約数ペア:

[(1, 887990908), (2, 443995454), (4, 221997727), (7, 126855844), (14, 63427922), (28, 31713961), (31, 28644868), (61, 14557228), (62, 14322434), (122, 7278614), (124, 7161217), (217, 4092124), (244, 3639307), (427, 2079604), (434, 2046062), (541, 1641388), (854, 1039802), (868, 1023031), (961, 924028), (1082, 820694), (1708, 519901), (1891, 469588), (1922, 462014), (2164, 410347), (3782, 234794), (3787, 234484), (3844, 231007), (6727, 132004), (7564, 117397), (7574, 117242), (13237, 67084), (13454, 66002), (15148, 58621), (16771, 52948), (26474, 33542), (26908, 33001)]