21406403276

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{344753}}^1$

素因数の和:344838

約数の個数: 36

約数和(自身を含む): 40456192392

約数和(自身を除く): 19049789116

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 172, 361, 722, 817, 1444, 1634, 3268, 15523, 31046, 62092, 344753, 689506, 1379012, 6550307, 13100614, 14824379, 26201228, 29648758, 59297516, 124455833, 248911666, 281663201, 497823332, 563326402, 1126652804, 5351600819, 10703201638, 21406403276]

約数ペア:

[(1, 21406403276), (2, 10703201638), (4, 5351600819), (19, 1126652804), (38, 563326402), (43, 497823332), (76, 281663201), (86, 248911666), (172, 124455833), (361, 59297516), (722, 29648758), (817, 26201228), (1444, 14824379), (1634, 13100614), (3268, 6550307), (15523, 1379012), (31046, 689506), (62092, 344753)]