20018940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3061}}^1$

素因数の和:3182

約数の個数: 48

約数和(自身を含む): 56585760

約数和(自身を除く): 36566820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 109, 218, 327, 436, 545, 654, 1090, 1308, 1635, 2180, 3061, 3270, 6122, 6540, 9183, 12244, 15305, 18366, 30610, 36732, 45915, 61220, 91830, 183660, 333649, 667298, 1000947, 1334596, 1668245, 2001894, 3336490, 4003788, 5004735, 6672980, 10009470, 20018940]

約数ペア:

[(1, 20018940), (2, 10009470), (3, 6672980), (4, 5004735), (5, 4003788), (6, 3336490), (10, 2001894), (12, 1668245), (15, 1334596), (20, 1000947), (30, 667298), (60, 333649), (109, 183660), (218, 91830), (327, 61220), (436, 45915), (545, 36732), (654, 30610), (1090, 18366), (1308, 15305), (1635, 12244), (2180, 9183), (3061, 6540), (3270, 6122)]