21179235

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1667}}^1$

素因数の和:1704

約数の個数: 48

約数和(自身を含む): 42594048

約数和(自身を除く): 21414813

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 121, 165, 231, 363, 385, 605, 847, 1155, 1667, 1815, 2541, 4235, 5001, 8335, 11669, 12705, 18337, 25005, 35007, 55011, 58345, 91685, 128359, 175035, 201707, 275055, 385077, 605121, 641795, 1008535, 1411949, 1925385, 3025605, 4235847, 7059745, 21179235]

約数ペア:

[(1, 21179235), (3, 7059745), (5, 4235847), (7, 3025605), (11, 1925385), (15, 1411949), (21, 1008535), (33, 641795), (35, 605121), (55, 385077), (77, 275055), (105, 201707), (121, 175035), (165, 128359), (231, 91685), (363, 58345), (385, 55011), (605, 35007), (847, 25005), (1155, 18337), (1667, 12705), (1815, 11669), (2541, 8335), (4235, 5001)]