2016802520

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{77929}}^1$

素因数の和:78587

約数の個数: 32

約数和(自身を含む): 4544877600

約数和(自身を除く): 2528075080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2588, 3235, 5176, 6470, 12940, 25880, 77929, 155858, 311716, 389645, 623432, 779290, 1558580, 3117160, 50420063, 100840126, 201680252, 252100315, 403360504, 504200630, 1008401260, 2016802520]

約数ペア:

[(1, 2016802520), (2, 1008401260), (4, 504200630), (5, 403360504), (8, 252100315), (10, 201680252), (20, 100840126), (40, 50420063), (647, 3117160), (1294, 1558580), (2588, 779290), (3235, 623432), (5176, 389645), (6470, 311716), (12940, 155858), (25880, 77929)]