18912537

素因数分解:

$3^2\times 7^1\times {\mathrm{317}}^1\times {\mathrm{947}}^1$

素因数の和:1277

約数の個数: 24

約数和(自身を含む): 31352256

約数和(自身を除く): 12439719

約数列:

[1, 3, 7, 9, 21, 63, 317, 947, 951, 2219, 2841, 2853, 6629, 6657, 8523, 19887, 19971, 59661, 300199, 900597, 2101393, 2701791, 6304179, 18912537]

約数ペア:

[(1, 18912537), (3, 6304179), (7, 2701791), (9, 2101393), (21, 900597), (63, 300199), (317, 59661), (947, 19971), (951, 19887), (2219, 8523), (2841, 6657), (2853, 6629)]