21052503

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1237}}^1$

素因数の和:1335

約数の個数: 24

約数和(自身を含む): 31930496

約数和(自身を除く): 10877993

約数列:

[1, 3, 9, 31, 61, 93, 183, 279, 549, 1237, 1891, 3711, 5673, 11133, 17019, 38347, 75457, 115041, 226371, 345123, 679113, 2339167, 7017501, 21052503]

約数ペア:

[(1, 21052503), (3, 7017501), (9, 2339167), (31, 679113), (61, 345123), (93, 226371), (183, 115041), (279, 75457), (549, 38347), (1237, 17019), (1891, 11133), (3711, 5673)]