20392892

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{311}}^1$

素因数の和:438

約数の個数: 36

約数和(自身を含む): 39167856

約数和(自身を除く): 18774964

約数列:

[1, 2, 4, 13, 26, 52, 97, 169, 194, 311, 338, 388, 622, 676, 1244, 1261, 2522, 4043, 5044, 8086, 16172, 16393, 30167, 32786, 52559, 60334, 65572, 105118, 120668, 210236, 392171, 784342, 1568684, 5098223, 10196446, 20392892]

約数ペア:

[(1, 20392892), (2, 10196446), (4, 5098223), (13, 1568684), (26, 784342), (52, 392171), (97, 210236), (169, 120668), (194, 105118), (311, 65572), (338, 60334), (388, 52559), (622, 32786), (676, 30167), (1244, 16393), (1261, 16172), (2522, 8086), (4043, 5044)]