19826937

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{991}}^1$

素因数の和:1035

約数の個数: 40

約数和(自身を含む): 33608960

約数和(自身を除く): 13782023

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 81, 117, 171, 247, 351, 513, 741, 991, 1053, 1539, 2223, 2973, 6669, 8919, 12883, 18829, 20007, 26757, 38649, 56487, 80271, 115947, 169461, 244777, 347841, 508383, 734331, 1043523, 1525149, 2202993, 6608979, 19826937]

約数ペア:

[(1, 19826937), (3, 6608979), (9, 2202993), (13, 1525149), (19, 1043523), (27, 734331), (39, 508383), (57, 347841), (81, 244777), (117, 169461), (171, 115947), (247, 80271), (351, 56487), (513, 38649), (741, 26757), (991, 20007), (1053, 18829), (1539, 12883), (2223, 8919), (2973, 6669)]