20105997904

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{438001}}^1$

素因数の和:438179

約数の個数: 40

約数和(自身を含む): 41277308480

約数和(自身を除く): 21171310576

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 151, 152, 302, 304, 604, 1208, 2416, 2869, 5738, 11476, 22952, 45904, 438001, 876002, 1752004, 3504008, 7008016, 8322019, 16644038, 33288076, 66138151, 66576152, 132276302, 133152304, 264552604, 529105208, 1058210416, 1256624869, 2513249738, 5026499476, 10052998952, 20105997904]

約数ペア:

[(1, 20105997904), (2, 10052998952), (4, 5026499476), (8, 2513249738), (16, 1256624869), (19, 1058210416), (38, 529105208), (76, 264552604), (151, 133152304), (152, 132276302), (302, 66576152), (304, 66138151), (604, 33288076), (1208, 16644038), (2416, 8322019), (2869, 7008016), (5738, 3504008), (11476, 1752004), (22952, 876002), (45904, 438001)]