20366920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72739}}^1$

素因数の和:72757

約数の個数: 32

約数和(自身を含む): 52372800

約数和(自身を除く): 32005880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72739, 145478, 290956, 363695, 509173, 581912, 727390, 1018346, 1454780, 2036692, 2545865, 2909560, 4073384, 5091730, 10183460, 20366920]

約数ペア:

[(1, 20366920), (2, 10183460), (4, 5091730), (5, 4073384), (7, 2909560), (8, 2545865), (10, 2036692), (14, 1454780), (20, 1018346), (28, 727390), (35, 581912), (40, 509173), (56, 363695), (70, 290956), (140, 145478), (280, 72739)]