20409760

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18223}}^1$

素因数の和:18245

約数の個数: 48

約数和(自身を含む): 55109376

約数和(自身を除く): 34699616

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18223, 36446, 72892, 91115, 127561, 145784, 182230, 255122, 291568, 364460, 510244, 583136, 637805, 728920, 1020488, 1275610, 1457840, 2040976, 2551220, 2915680, 4081952, 5102440, 10204880, 20409760]

約数ペア:

[(1, 20409760), (2, 10204880), (4, 5102440), (5, 4081952), (7, 2915680), (8, 2551220), (10, 2040976), (14, 1457840), (16, 1275610), (20, 1020488), (28, 728920), (32, 637805), (35, 583136), (40, 510244), (56, 364460), (70, 291568), (80, 255122), (112, 182230), (140, 145784), (160, 127561), (224, 91115), (280, 72892), (560, 36446), (1120, 18223)]