21706685

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4337}}^1$

素因数の和:4373

約数の個数: 32

約数和(自身を含む): 34981632

約数和(自身を除く): 13274947

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 4337, 5005, 21685, 30359, 47707, 56381, 151795, 238535, 281905, 333949, 394667, 620191, 1669745, 1973335, 3100955, 4341337, 21706685]

約数ペア:

[(1, 21706685), (5, 4341337), (7, 3100955), (11, 1973335), (13, 1669745), (35, 620191), (55, 394667), (65, 333949), (77, 281905), (91, 238535), (143, 151795), (385, 56381), (455, 47707), (715, 30359), (1001, 21685), (4337, 5005)]