123425680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{220403}}^1$

素因数の和:220423

約数の個数: 40

約数和(自身を含む): 327961152

約数和(自身を除く): 204535472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 220403, 440806, 881612, 1102015, 1542821, 1763224, 2204030, 3085642, 3526448, 4408060, 6171284, 7714105, 8816120, 12342568, 15428210, 17632240, 24685136, 30856420, 61712840, 123425680]

約数ペア:

[(1, 123425680), (2, 61712840), (4, 30856420), (5, 24685136), (7, 17632240), (8, 15428210), (10, 12342568), (14, 8816120), (16, 7714105), (20, 6171284), (28, 4408060), (35, 3526448), (40, 3085642), (56, 2204030), (70, 1763224), (80, 1542821), (112, 1102015), (140, 881612), (280, 440806), (560, 220403)]