168724040

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{19991}}^1$

素因数の和:20213

約数の個数: 32

約数和(自身を含む): 381447360

約数和(自身を除く): 212723320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 19991, 39982, 79964, 99955, 159928, 199910, 399820, 799640, 4218101, 8436202, 16872404, 21090505, 33744808, 42181010, 84362020, 168724040]

約数ペア:

[(1, 168724040), (2, 84362020), (4, 42181010), (5, 33744808), (8, 21090505), (10, 16872404), (20, 8436202), (40, 4218101), (211, 799640), (422, 399820), (844, 199910), (1055, 159928), (1688, 99955), (2110, 79964), (4220, 39982), (8440, 19991)]