21981566152

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{757}}^1\times {\mathrm{39887}}^1$

素因数の和:40670

約数の個数: 64

約数和(自身を含む): 50794974720

約数和(自身を除く): 28813408568

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 757, 1514, 3028, 5299, 6056, 9841, 10598, 19682, 21196, 39364, 39887, 42392, 68887, 78728, 79774, 137774, 159548, 275548, 279209, 319096, 518531, 551096, 558418, 1037062, 1116836, 2074124, 2233672, 3629717, 4148248, 7259434, 14518868, 29037736, 30194459, 60388918, 120777836, 211361213, 241555672, 392527967, 422722426, 785055934, 845444852, 1570111868, 1690889704, 2747695769, 3140223736, 5495391538, 10990783076, 21981566152]

約数ペア:

[(1, 21981566152), (2, 10990783076), (4, 5495391538), (7, 3140223736), (8, 2747695769), (13, 1690889704), (14, 1570111868), (26, 845444852), (28, 785055934), (52, 422722426), (56, 392527967), (91, 241555672), (104, 211361213), (182, 120777836), (364, 60388918), (728, 30194459), (757, 29037736), (1514, 14518868), (3028, 7259434), (5299, 4148248), (6056, 3629717), (9841, 2233672), (10598, 2074124), (19682, 1116836), (21196, 1037062), (39364, 558418), (39887, 551096), (42392, 518531), (68887, 319096), (78728, 279209), (79774, 275548), (137774, 159548)]