21131884

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{37}}^2\times {\mathrm{227}}^1$

素因数の和:322

約数の個数: 36

約数和(自身を含む): 40420296

約数和(自身を除く): 19288412

約数列:

[1, 2, 4, 17, 34, 37, 68, 74, 148, 227, 454, 629, 908, 1258, 1369, 2516, 2738, 3859, 5476, 7718, 8399, 15436, 16798, 23273, 33596, 46546, 93092, 142783, 285566, 310763, 571132, 621526, 1243052, 5282971, 10565942, 21131884]

約数ペア:

[(1, 21131884), (2, 10565942), (4, 5282971), (17, 1243052), (34, 621526), (37, 571132), (68, 310763), (74, 285566), (148, 142783), (227, 93092), (454, 46546), (629, 33596), (908, 23273), (1258, 16798), (1369, 15436), (2516, 8399), (2738, 7718), (3859, 5476)]