21767888

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{419}}^1$

素因数の和:635

約数の個数: 40

約数和(自身を含む): 44997120

約数和(自身を除く): 23229232

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 191, 272, 382, 419, 764, 838, 1528, 1676, 3056, 3247, 3352, 6494, 6704, 7123, 12988, 14246, 25976, 28492, 51952, 56984, 80029, 113968, 160058, 320116, 640232, 1280464, 1360493, 2720986, 5441972, 10883944, 21767888]

約数ペア:

[(1, 21767888), (2, 10883944), (4, 5441972), (8, 2720986), (16, 1360493), (17, 1280464), (34, 640232), (68, 320116), (136, 160058), (191, 113968), (272, 80029), (382, 56984), (419, 51952), (764, 28492), (838, 25976), (1528, 14246), (1676, 12988), (3056, 7123), (3247, 6704), (3352, 6494)]