407896040

素因数分解:

$2^3\times 5^1\times {\mathrm{907}}^1\times {\mathrm{11243}}^1$

素因数の和:12161

約数の個数: 32

約数和(自身を含む): 918859680

約数和(自身を除く): 510963640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 907, 1814, 3628, 4535, 7256, 9070, 11243, 18140, 22486, 36280, 44972, 56215, 89944, 112430, 224860, 449720, 10197401, 20394802, 40789604, 50987005, 81579208, 101974010, 203948020, 407896040]

約数ペア:

[(1, 407896040), (2, 203948020), (4, 101974010), (5, 81579208), (8, 50987005), (10, 40789604), (20, 20394802), (40, 10197401), (907, 449720), (1814, 224860), (3628, 112430), (4535, 89944), (7256, 56215), (9070, 44972), (11243, 36280), (18140, 22486)]