129457940

素因数分解:

$2^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{11621}}^1$

素因数の和:12187

約数の個数: 24

約数和(自身を含む): 272373192

約数和(自身を除く): 142915252

約数列:

[1, 2, 4, 5, 10, 20, 557, 1114, 2228, 2785, 5570, 11140, 11621, 23242, 46484, 58105, 116210, 232420, 6472897, 12945794, 25891588, 32364485, 64728970, 129457940]

約数ペア:

[(1, 129457940), (2, 64728970), (4, 32364485), (5, 25891588), (10, 12945794), (20, 6472897), (557, 232420), (1114, 116210), (2228, 58105), (2785, 46484), (5570, 23242), (11140, 11621)]