20906725

素因数分解:

$5^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{619}}^1$

素因数の和:829

約数の個数: 24

約数和(自身を含む): 29829440

約数和(自身を除く): 8922715

約数列:

[1, 5, 7, 25, 35, 175, 193, 619, 965, 1351, 3095, 4333, 4825, 6755, 15475, 21665, 33775, 108325, 119467, 597335, 836269, 2986675, 4181345, 20906725]

約数ペア:

[(1, 20906725), (5, 4181345), (7, 2986675), (25, 836269), (35, 597335), (175, 119467), (193, 108325), (619, 33775), (965, 21665), (1351, 15475), (3095, 6755), (4333, 4825)]