18681677

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{653}}^1$

素因数の和:788

約数の個数: 16

約数和(自身を含む): 22058112

約数和(自身を除く): 3376435

約数列:

[1, 7, 61, 67, 427, 469, 653, 4087, 4571, 28609, 39833, 43751, 278831, 306257, 2668811, 18681677]

約数ペア:

[(1, 18681677), (7, 2668811), (61, 306257), (67, 278831), (427, 43751), (469, 39833), (653, 28609), (4087, 4571)]