20783061

素因数分解:

$3^7\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:94

約数の個数: 64

約数和(自身を含む): 36368640

約数和(自身を除く): 15585579

約数列:

[1, 3, 9, 13, 17, 27, 39, 43, 51, 81, 117, 129, 153, 221, 243, 351, 387, 459, 559, 663, 729, 731, 1053, 1161, 1377, 1677, 1989, 2187, 2193, 3159, 3483, 4131, 5031, 5967, 6579, 9477, 9503, 10449, 12393, 15093, 17901, 19737, 28431, 28509, 31347, 37179, 45279, 53703, 59211, 85527, 94041, 135837, 161109, 177633, 256581, 407511, 483327, 532899, 769743, 1222533, 1598697, 2309229, 6927687, 20783061]

約数ペア:

[(1, 20783061), (3, 6927687), (9, 2309229), (13, 1598697), (17, 1222533), (27, 769743), (39, 532899), (43, 483327), (51, 407511), (81, 256581), (117, 177633), (129, 161109), (153, 135837), (221, 94041), (243, 85527), (351, 59211), (387, 53703), (459, 45279), (559, 37179), (663, 31347), (729, 28509), (731, 28431), (1053, 19737), (1161, 17901), (1377, 15093), (1677, 12393), (1989, 10449), (2187, 9503), (2193, 9477), (3159, 6579), (3483, 5967), (4131, 5031)]