21169390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{863}}^1$

素因数の和:1104

約数の個数: 32

約数和(自身を含む): 41803776

約数和(自身を除く): 20634386

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 223, 446, 863, 1115, 1726, 2230, 2453, 4315, 4906, 8630, 9493, 12265, 18986, 24530, 47465, 94930, 192449, 384898, 962245, 1924490, 2116939, 4233878, 10584695, 21169390]

約数ペア:

[(1, 21169390), (2, 10584695), (5, 4233878), (10, 2116939), (11, 1924490), (22, 962245), (55, 384898), (110, 192449), (223, 94930), (446, 47465), (863, 24530), (1115, 18986), (1726, 12265), (2230, 9493), (2453, 8630), (4315, 4906)]