639424

素因数分解:

$2^6\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:212

約数の個数: 28

約数和(自身を含む): 1294384

約数和(自身を除く): 654960

約数列:

[1, 2, 4, 8, 16, 32, 64, 97, 103, 194, 206, 388, 412, 776, 824, 1552, 1648, 3104, 3296, 6208, 6592, 9991, 19982, 39964, 79928, 159856, 319712, 639424]

約数ペア:

[(1, 639424), (2, 319712), (4, 159856), (8, 79928), (16, 39964), (32, 19982), (64, 9991), (97, 6592), (103, 6208), (194, 3296), (206, 3104), (388, 1648), (412, 1552), (776, 824)]