21317704

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{631}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 41408640

約数和(自身を除く): 20090936

約数列:

[1, 2, 4, 8, 41, 82, 103, 164, 206, 328, 412, 631, 824, 1262, 2524, 4223, 5048, 8446, 16892, 25871, 33784, 51742, 64993, 103484, 129986, 206968, 259972, 519944, 2664713, 5329426, 10658852, 21317704]

約数ペア:

[(1, 21317704), (2, 10658852), (4, 5329426), (8, 2664713), (41, 519944), (82, 259972), (103, 206968), (164, 129986), (206, 103484), (328, 64993), (412, 51742), (631, 33784), (824, 25871), (1262, 16892), (2524, 8446), (4223, 5048)]