21502552

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{709}}^1$

素因数の和:955

約数の個数: 32

約数和(自身を含む): 42940800

約数和(自身を除く): 21438248

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 223, 446, 709, 892, 1418, 1784, 2836, 3791, 5672, 7582, 12053, 15164, 24106, 30328, 48212, 96424, 158107, 316214, 632428, 1264856, 2687819, 5375638, 10751276, 21502552]

約数ペア:

[(1, 21502552), (2, 10751276), (4, 5375638), (8, 2687819), (17, 1264856), (34, 632428), (68, 316214), (136, 158107), (223, 96424), (446, 48212), (709, 30328), (892, 24106), (1418, 15164), (1784, 12053), (2836, 7582), (3791, 5672)]