204737820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{487471}}^1$

素因数の和:487490

約数の個数: 48

約数和(自身を含む): 655162368

約数和(自身を除く): 450424548

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 487471, 974942, 1462413, 1949884, 2437355, 2924826, 3412297, 4874710, 5849652, 6824594, 7312065, 9749420, 10236891, 13649188, 14624130, 17061485, 20473782, 29248260, 34122970, 40947564, 51184455, 68245940, 102368910, 204737820]

約数ペア:

[(1, 204737820), (2, 102368910), (3, 68245940), (4, 51184455), (5, 40947564), (6, 34122970), (7, 29248260), (10, 20473782), (12, 17061485), (14, 14624130), (15, 13649188), (20, 10236891), (21, 9749420), (28, 7312065), (30, 6824594), (35, 5849652), (42, 4874710), (60, 3412297), (70, 2924826), (84, 2437355), (105, 1949884), (140, 1462413), (210, 974942), (420, 487471)]