25679980

素因数分解:

$2^2\times 5^1\times {\mathrm{709}}^1\times {\mathrm{1811}}^1$

素因数の和:2529

約数の個数: 24

約数和(自身を含む): 54033840

約数和(自身を除く): 28353860

約数列:

[1, 2, 4, 5, 10, 20, 709, 1418, 1811, 2836, 3545, 3622, 7090, 7244, 9055, 14180, 18110, 36220, 1283999, 2567998, 5135996, 6419995, 12839990, 25679980]

約数ペア:

[(1, 25679980), (2, 12839990), (4, 6419995), (5, 5135996), (10, 2567998), (20, 1283999), (709, 36220), (1418, 18110), (1811, 14180), (2836, 9055), (3545, 7244), (3622, 7090)]