20791960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74257}}^1$

素因数の和:74275

約数の個数: 32

約数和(自身を含む): 53465760

約数和(自身を除く): 32673800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74257, 148514, 297028, 371285, 519799, 594056, 742570, 1039598, 1485140, 2079196, 2598995, 2970280, 4158392, 5197990, 10395980, 20791960]

約数ペア:

[(1, 20791960), (2, 10395980), (4, 5197990), (5, 4158392), (7, 2970280), (8, 2598995), (10, 2079196), (14, 1485140), (20, 1039598), (28, 742570), (35, 594056), (40, 519799), (56, 371285), (70, 297028), (140, 148514), (280, 74257)]