21131337700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{286721}}^1$

素因数の和:286813

約数の個数: 72

約数和(自身を含む): 50770437984

約数和(自身を除く): 29639100284

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 67, 100, 110, 134, 220, 268, 275, 335, 550, 670, 737, 1100, 1340, 1474, 1675, 2948, 3350, 3685, 6700, 7370, 14740, 18425, 36850, 73700, 286721, 573442, 1146884, 1433605, 2867210, 3153931, 5734420, 6307862, 7168025, 12615724, 14336050, 15769655, 19210307, 28672100, 31539310, 38420614, 63078620, 76841228, 78848275, 96051535, 157696550, 192103070, 211313377, 315393100, 384206140, 422626754, 480257675, 845253508, 960515350, 1056566885, 1921030700, 2113133770, 4226267540, 5282834425, 10565668850, 21131337700]

約数ペア:

[(1, 21131337700), (2, 10565668850), (4, 5282834425), (5, 4226267540), (10, 2113133770), (11, 1921030700), (20, 1056566885), (22, 960515350), (25, 845253508), (44, 480257675), (50, 422626754), (55, 384206140), (67, 315393100), (100, 211313377), (110, 192103070), (134, 157696550), (220, 96051535), (268, 78848275), (275, 76841228), (335, 63078620), (550, 38420614), (670, 31539310), (737, 28672100), (1100, 19210307), (1340, 15769655), (1474, 14336050), (1675, 12615724), (2948, 7168025), (3350, 6307862), (3685, 5734420), (6700, 3153931), (7370, 2867210), (14740, 1433605), (18425, 1146884), (36850, 573442), (73700, 286721)]