161404840

素因数分解:

$2^3\times 5^1\times {\mathrm{4035121}}^1$

素因数の和:4035132

約数の個数: 16

約数和(自身を含む): 363160980

約数和(自身を除く): 201756140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4035121, 8070242, 16140484, 20175605, 32280968, 40351210, 80702420, 161404840]

約数ペア:

[(1, 161404840), (2, 80702420), (4, 40351210), (5, 32280968), (8, 20175605), (10, 16140484), (20, 8070242), (40, 4035121)]