20821788

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{44491}}^1$

素因数の和:44514

約数の個数: 36

約数和(自身を含む): 56682808

約数和(自身を除く): 35861020

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 44491, 88982, 133473, 177964, 266946, 400419, 533892, 578383, 800838, 1156766, 1601676, 1735149, 2313532, 3470298, 5205447, 6940596, 10410894, 20821788]

約数ペア:

[(1, 20821788), (2, 10410894), (3, 6940596), (4, 5205447), (6, 3470298), (9, 2313532), (12, 1735149), (13, 1601676), (18, 1156766), (26, 800838), (36, 578383), (39, 533892), (52, 400419), (78, 266946), (117, 177964), (156, 133473), (234, 88982), (468, 44491)]