639735952

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{412201}}^1$

素因数の和:412306

約数の個数: 20

約数和(自身を含む): 1252269676

約数和(自身を除く): 612533724

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 776, 1552, 412201, 824402, 1648804, 3297608, 6595216, 39983497, 79966994, 159933988, 319867976, 639735952]

約数ペア:

[(1, 639735952), (2, 319867976), (4, 159933988), (8, 79966994), (16, 39983497), (97, 6595216), (194, 3297608), (388, 1648804), (776, 824402), (1552, 412201)]