20692749

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 35721216

約数和(自身を除く): 15028467

約数列:

[1, 3, 7, 11, 21, 33, 49, 67, 77, 147, 191, 201, 231, 469, 539, 573, 737, 1337, 1407, 1617, 2101, 2211, 3283, 4011, 5159, 6303, 9359, 9849, 12797, 14707, 15477, 28077, 36113, 38391, 44121, 89579, 102949, 108339, 140767, 268737, 308847, 422301, 627053, 985369, 1881159, 2956107, 6897583, 20692749]

約数ペア:

[(1, 20692749), (3, 6897583), (7, 2956107), (11, 1881159), (21, 985369), (33, 627053), (49, 422301), (67, 308847), (77, 268737), (147, 140767), (191, 108339), (201, 102949), (231, 89579), (469, 44121), (539, 38391), (573, 36113), (737, 28077), (1337, 15477), (1407, 14707), (1617, 12797), (2101, 9849), (2211, 9359), (3283, 6303), (4011, 5159)]