21467090

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{641}}^1$

素因数の和:862

約数の個数: 32

約数和(自身を含む): 41185584

約数和(自身を除く): 19718494

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 197, 394, 641, 985, 1282, 1970, 3205, 3349, 6410, 6698, 10897, 16745, 21794, 33490, 54485, 108970, 126277, 252554, 631385, 1262770, 2146709, 4293418, 10733545, 21467090]

約数ペア:

[(1, 21467090), (2, 10733545), (5, 4293418), (10, 2146709), (17, 1262770), (34, 631385), (85, 252554), (170, 126277), (197, 108970), (394, 54485), (641, 33490), (985, 21794), (1282, 16745), (1970, 10897), (3205, 6698), (3349, 6410)]