20377539

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{179}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 16313661

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 139, 179, 273, 417, 537, 819, 973, 1251, 1253, 1611, 1807, 2327, 2919, 3759, 5421, 6981, 8757, 11277, 12649, 16263, 16289, 20943, 24881, 37947, 48867, 74643, 113841, 146601, 174167, 223929, 323453, 522501, 970359, 1567503, 2264171, 2911077, 6792513, 20377539]

約数ペア:

[(1, 20377539), (3, 6792513), (7, 2911077), (9, 2264171), (13, 1567503), (21, 970359), (39, 522501), (63, 323453), (91, 223929), (117, 174167), (139, 146601), (179, 113841), (273, 74643), (417, 48867), (537, 37947), (819, 24881), (973, 20943), (1251, 16289), (1253, 16263), (1611, 12649), (1807, 11277), (2327, 8757), (2919, 6981), (3759, 5421)]