20431968

素因数分解:

$2^5\times 3^1\times {\mathrm{331}}^1\times {\mathrm{643}}^1$

素因数の和:987

約数の個数: 48

約数和(自身を含む): 53879616

約数和(自身を除く): 33447648

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 331, 643, 662, 993, 1286, 1324, 1929, 1986, 2572, 2648, 3858, 3972, 5144, 5296, 7716, 7944, 10288, 10592, 15432, 15888, 20576, 30864, 31776, 61728, 212833, 425666, 638499, 851332, 1276998, 1702664, 2553996, 3405328, 5107992, 6810656, 10215984, 20431968]

約数ペア:

[(1, 20431968), (2, 10215984), (3, 6810656), (4, 5107992), (6, 3405328), (8, 2553996), (12, 1702664), (16, 1276998), (24, 851332), (32, 638499), (48, 425666), (96, 212833), (331, 61728), (643, 31776), (662, 30864), (993, 20576), (1286, 15888), (1324, 15432), (1929, 10592), (1986, 10288), (2572, 7944), (2648, 7716), (3858, 5296), (3972, 5144)]