21432418

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:634

約数の個数: 32

約数和(自身を含む): 38966400

約数和(自身を除く): 17533982

約数列:

[1, 2, 7, 14, 19, 38, 133, 197, 266, 394, 409, 818, 1379, 2758, 2863, 3743, 5726, 7486, 7771, 15542, 26201, 52402, 54397, 80573, 108794, 161146, 564011, 1128022, 1530887, 3061774, 10716209, 21432418]

約数ペア:

[(1, 21432418), (2, 10716209), (7, 3061774), (14, 1530887), (19, 1128022), (38, 564011), (133, 161146), (197, 108794), (266, 80573), (394, 54397), (409, 52402), (818, 26201), (1379, 15542), (2758, 7771), (2863, 7486), (3743, 5726)]