205909823

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{409}}^1$

素因数の和:551

約数の個数: 32

約数和(自身を含む): 255052800

約数和(自身を除く): 49142977

約数列:

[1, 7, 23, 53, 59, 161, 371, 409, 413, 1219, 1357, 2863, 3127, 8533, 9407, 9499, 21677, 21889, 24131, 65849, 71921, 151739, 168917, 498571, 503447, 555013, 1278943, 3489997, 3885091, 8952601, 29415689, 205909823]

約数ペア:

[(1, 205909823), (7, 29415689), (23, 8952601), (53, 3885091), (59, 3489997), (161, 1278943), (371, 555013), (409, 503447), (413, 498571), (1219, 168917), (1357, 151739), (2863, 71921), (3127, 65849), (8533, 24131), (9407, 21889), (9499, 21677)]