129440840

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61057}}^1$

素因数の和:61121

約数の個数: 32

約数和(自身を含む): 296741880

約数和(自身を除く): 167301040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 61057, 122114, 244228, 305285, 488456, 610570, 1221140, 2442280, 3236021, 6472042, 12944084, 16180105, 25888168, 32360210, 64720420, 129440840]

約数ペア:

[(1, 129440840), (2, 64720420), (4, 32360210), (5, 25888168), (8, 16180105), (10, 12944084), (20, 6472042), (40, 3236021), (53, 2442280), (106, 1221140), (212, 610570), (265, 488456), (424, 305285), (530, 244228), (1060, 122114), (2120, 61057)]