25214590

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{691}}^1$

素因数の和:828

約数の個数: 32

約数和(自身を含む): 47083680

約数和(自身を除く): 21869090

約数列:

[1, 2, 5, 10, 41, 82, 89, 178, 205, 410, 445, 691, 890, 1382, 3455, 3649, 6910, 7298, 18245, 28331, 36490, 56662, 61499, 122998, 141655, 283310, 307495, 614990, 2521459, 5042918, 12607295, 25214590]

約数ペア:

[(1, 25214590), (2, 12607295), (5, 5042918), (10, 2521459), (41, 614990), (82, 307495), (89, 283310), (178, 141655), (205, 122998), (410, 61499), (445, 56662), (691, 36490), (890, 28331), (1382, 18245), (3455, 7298), (3649, 6910)]