209215100

素因数分解:

$2^2\times 5^2\times {\mathrm{491}}^1\times {\mathrm{4261}}^1$

素因数の和:4766

約数の個数: 36

約数和(自身を含む): 455028168

約数和(自身を除く): 245813068

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 491, 982, 1964, 2455, 4261, 4910, 8522, 9820, 12275, 17044, 21305, 24550, 42610, 49100, 85220, 106525, 213050, 426100, 2092151, 4184302, 8368604, 10460755, 20921510, 41843020, 52303775, 104607550, 209215100]

約数ペア:

[(1, 209215100), (2, 104607550), (4, 52303775), (5, 41843020), (10, 20921510), (20, 10460755), (25, 8368604), (50, 4184302), (100, 2092151), (491, 426100), (982, 213050), (1964, 106525), (2455, 85220), (4261, 49100), (4910, 42610), (8522, 24550), (9820, 21305), (12275, 17044)]