211399475

素因数分解:

$5^2\times 7^3\times {\mathrm{89}}^1\times {\mathrm{277}}^1$

素因数の和:397

約数の個数: 48

約数和(自身を含む): 310248000

約数和(自身を除く): 98848525

約数列:

[1, 5, 7, 25, 35, 49, 89, 175, 245, 277, 343, 445, 623, 1225, 1385, 1715, 1939, 2225, 3115, 4361, 6925, 8575, 9695, 13573, 15575, 21805, 24653, 30527, 48475, 67865, 95011, 109025, 123265, 152635, 172571, 339325, 475055, 616325, 763175, 862855, 1207997, 2375275, 4314275, 6039985, 8455979, 30199925, 42279895, 211399475]

約数ペア:

[(1, 211399475), (5, 42279895), (7, 30199925), (25, 8455979), (35, 6039985), (49, 4314275), (89, 2375275), (175, 1207997), (245, 862855), (277, 763175), (343, 616325), (445, 475055), (623, 339325), (1225, 172571), (1385, 152635), (1715, 123265), (1939, 109025), (2225, 95011), (3115, 67865), (4361, 48475), (6925, 30527), (8575, 24653), (9695, 21805), (13573, 15575)]