21721538

素因数分解:

$2^1\times {\mathrm{113}}^1\times {\mathrm{223}}^1\times {\mathrm{431}}^1$

素因数の和:769

約数の個数: 16

約数和(自身を含む): 33094656

約数和(自身を除く): 11373118

約数列:

[1, 2, 113, 223, 226, 431, 446, 862, 25199, 48703, 50398, 96113, 97406, 192226, 10860769, 21721538]

約数ペア:

[(1, 21721538), (2, 10860769), (113, 192226), (223, 97406), (226, 96113), (431, 50398), (446, 48703), (862, 25199)]