39949990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{701}}^1$

素因数の和:888

約数の個数: 32

約数和(自身を含む): 74299680

約数和(自身を除く): 34349690

約数列:

[1, 2, 5, 10, 41, 82, 139, 205, 278, 410, 695, 701, 1390, 1402, 3505, 5699, 7010, 11398, 28495, 28741, 56990, 57482, 97439, 143705, 194878, 287410, 487195, 974390, 3994999, 7989998, 19974995, 39949990]

約数ペア:

[(1, 39949990), (2, 19974995), (5, 7989998), (10, 3994999), (41, 974390), (82, 487195), (139, 287410), (205, 194878), (278, 143705), (410, 97439), (695, 57482), (701, 56990), (1390, 28741), (1402, 28495), (3505, 11398), (5699, 7010)]