289247920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{278123}}^1$

素因数の和:278149

約数の個数: 40

約数和(自身を含む): 724234896

約数和(自身を除く): 434986976

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 278123, 556246, 1112492, 1390615, 2224984, 2781230, 3615599, 4449968, 5562460, 7231198, 11124920, 14462396, 18077995, 22249840, 28924792, 36155990, 57849584, 72311980, 144623960, 289247920]

約数ペア:

[(1, 289247920), (2, 144623960), (4, 72311980), (5, 57849584), (8, 36155990), (10, 28924792), (13, 22249840), (16, 18077995), (20, 14462396), (26, 11124920), (40, 7231198), (52, 5562460), (65, 4449968), (80, 3615599), (104, 2781230), (130, 2224984), (208, 1390615), (260, 1112492), (520, 556246), (1040, 278123)]