21156016

素因数分解:

$2^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{4019}}^1$

素因数の和:4081

約数の個数: 40

約数和(自身を含む): 47854080

約数和(自身を除く): 26698064

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 47, 56, 94, 112, 188, 329, 376, 658, 752, 1316, 2632, 4019, 5264, 8038, 16076, 28133, 32152, 56266, 64304, 112532, 188893, 225064, 377786, 450128, 755572, 1322251, 1511144, 2644502, 3022288, 5289004, 10578008, 21156016]

約数ペア:

[(1, 21156016), (2, 10578008), (4, 5289004), (7, 3022288), (8, 2644502), (14, 1511144), (16, 1322251), (28, 755572), (47, 450128), (56, 377786), (94, 225064), (112, 188893), (188, 112532), (329, 64304), (376, 56266), (658, 32152), (752, 28133), (1316, 16076), (2632, 8038), (4019, 5264)]