21261350

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:126

約数の個数: 96

約数和(自身を含む): 47139840

約数和(自身を除く): 25878490

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 31, 43, 50, 55, 58, 62, 86, 110, 145, 155, 215, 275, 290, 310, 319, 341, 430, 473, 550, 638, 682, 725, 775, 899, 946, 1075, 1247, 1333, 1450, 1550, 1595, 1705, 1798, 2150, 2365, 2494, 2666, 3190, 3410, 4495, 4730, 6235, 6665, 7975, 8525, 8990, 9889, 11825, 12470, 13330, 13717, 14663, 15950, 17050, 19778, 22475, 23650, 27434, 29326, 31175, 33325, 38657, 44950, 49445, 62350, 66650, 68585, 73315, 77314, 98890, 137170, 146630, 193285, 247225, 342925, 366575, 386570, 425227, 494450, 685850, 733150, 850454, 966425, 1932850, 2126135, 4252270, 10630675, 21261350]

約数ペア:

[(1, 21261350), (2, 10630675), (5, 4252270), (10, 2126135), (11, 1932850), (22, 966425), (25, 850454), (29, 733150), (31, 685850), (43, 494450), (50, 425227), (55, 386570), (58, 366575), (62, 342925), (86, 247225), (110, 193285), (145, 146630), (155, 137170), (215, 98890), (275, 77314), (290, 73315), (310, 68585), (319, 66650), (341, 62350), (430, 49445), (473, 44950), (550, 38657), (638, 33325), (682, 31175), (725, 29326), (775, 27434), (899, 23650), (946, 22475), (1075, 19778), (1247, 17050), (1333, 15950), (1450, 14663), (1550, 13717), (1595, 13330), (1705, 12470), (1798, 11825), (2150, 9889), (2365, 8990), (2494, 8525), (2666, 7975), (3190, 6665), (3410, 6235), (4495, 4730)]