20903103

素因数分解:

$3^5\times {\mathrm{13}}^2\times {\mathrm{509}}^1$

素因数の和:550

約数の個数: 36

約数和(自身を含む): 33972120

約数和(自身を除く): 13069017

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 169, 243, 351, 507, 509, 1053, 1521, 1527, 3159, 4563, 4581, 6617, 13689, 13743, 19851, 41067, 41229, 59553, 86021, 123687, 178659, 258063, 535977, 774189, 1607931, 2322567, 6967701, 20903103]

約数ペア:

[(1, 20903103), (3, 6967701), (9, 2322567), (13, 1607931), (27, 774189), (39, 535977), (81, 258063), (117, 178659), (169, 123687), (243, 86021), (351, 59553), (507, 41229), (509, 41067), (1053, 19851), (1521, 13743), (1527, 13689), (3159, 6617), (4563, 4581)]