20881013072

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{708119}}^1$

素因数の和:708243

約数の個数: 40

約数和(自身を含む): 43025371200

約数和(自身を除く): 22144358128

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 97, 152, 194, 304, 388, 776, 1552, 1843, 3686, 7372, 14744, 29488, 708119, 1416238, 2832476, 5664952, 11329904, 13454261, 26908522, 53817044, 68687543, 107634088, 137375086, 215268176, 274750172, 549500344, 1099000688, 1305063317, 2610126634, 5220253268, 10440506536, 20881013072]

約数ペア:

[(1, 20881013072), (2, 10440506536), (4, 5220253268), (8, 2610126634), (16, 1305063317), (19, 1099000688), (38, 549500344), (76, 274750172), (97, 215268176), (152, 137375086), (194, 107634088), (304, 68687543), (388, 53817044), (776, 26908522), (1552, 13454261), (1843, 11329904), (3686, 5664952), (7372, 2832476), (14744, 1416238), (29488, 708119)]