68991728

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{331691}}^1$

素因数の和:331712

約数の個数: 20

約数和(自身を含む): 143954328

約数和(自身を除く): 74962600

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 331691, 663382, 1326764, 2653528, 4311983, 5307056, 8623966, 17247932, 34495864, 68991728]

約数ペア:

[(1, 68991728), (2, 34495864), (4, 17247932), (8, 8623966), (13, 5307056), (16, 4311983), (26, 2653528), (52, 1326764), (104, 663382), (208, 331691)]